A special-shaped hole punching device for suppressing sheet metal deformation of a pressing core structure

Abstract

The utility model discloses a kind of special-shaped hole punching device of core structure inhibiting sheet metal deformation, including special-shaped hole punch, it is installed in press driving end, for on sheet metal part on press driving down time and form special-shaped hole on blanking;Special-shaped hole punch inside is equipped with core cavity extending along vertical direction, the sliding core cavity in this is provided with press core, press core is connected with independent sliding drive mechanism;Special-shaped hole punch downhole punching time, sliding drive mechanism drives press core to move upwards and hide in core cavity;Special-shaped hole punch uplink reset time, sliding drive mechanism drives press core to extend out the inner edge structure of core cavity downwards.The utility model is controlled by independent drive mechanism by setting the press core that can be telescopic in special-shaped hole punch, solve the problem that inner edge structure is bent and deformed upwards due to scraping incidental action when special-shaped hole punch resets.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal punching technology, and in particular relates to a punching device for irregular holes that uses a core pressing structure to suppress sheet metal deformation. Background Technology

[0002] like Figure 1 As shown, the sheet metal part 1 is used to connect the reinforcing ribs of the wind turbine housing. The irregular hole 1a on it is formed by punching. During the process of the irregular hole punch moving upward and resetting, due to the scraping effect, the inner edge structure 1b is easily lifted, causing it to bend upward, resulting in deformation, dimensional deviation, or even tearing. This not only leads to a high product scrap rate, but also requires additional leveling processes, reducing production efficiency and increasing production costs. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a punching device for irregular holes with a core structure to suppress sheet metal deformation. By setting a core that can move in and out of the irregular hole punch controlled by an independent drive mechanism, the problem of the inner edge structure bending upward and deforming due to the scraping effect when the irregular hole punch is reset is solved.

[0004] Technical solution: To achieve the above objectives, the present invention provides a punching device for irregular holes in sheet metal with a core structure to suppress sheet metal deformation, including an irregular hole punch, which is installed on the drive end of a press and is used to punch irregular holes in sheet metal parts when the press is driven downward.

[0005] The irregular hole punch has a core cavity extending vertically inside, and a pressure core is slidably disposed in the core cavity. The pressure core is connected to an independent sliding drive mechanism.

[0006] When the irregular hole punch moves downward to punch a hole, the sliding drive mechanism drives the pressure core to move upward and hide inside the core cavity;

[0007] When the irregular hole punch moves upward to reset, the sliding drive mechanism drives the pressure core to extend downward out of the inner edge structure of the core cavity.

[0008] Furthermore, the irregular hole punch includes an installation section, a guide section, and a working section integrally formed from top to bottom; the core cavity extends from the guide section and penetrates into the working section;

[0009] During the punching process, the pressure core moves upward under the action of the sliding drive mechanism and is completely housed inside the guide section.

[0010] Furthermore, the press drive end is provided with a mounting cavity adapted to the mounting section, the mounting section is assembled in the mounting cavity and fixed by a fastening mechanism.

[0011] Furthermore, the fastening mechanism is a bolt and nut assembly.

[0012] Furthermore, it also includes a core connector connected to the core, through which the sliding drive mechanism is connected to the core.

[0013] Furthermore, the pressure core and the pressure core connection part are integrally formed structures.

[0014] Furthermore, it also includes a drive mounting base disposed on the side of the press drive end, on which the sliding drive mechanism is mounted.

[0015] Furthermore, the sliding drive mechanism is a cylinder or an electric push rod, and its installation direction is parallel to the running direction of the irregular hole punch.

[0016] Furthermore, the sliding drive mechanism is electrically connected to the control system of the press to control the retraction of the pressure core when the punch of the irregular hole moves downward to punch, and to control the extension of the pressure core when the punch of the irregular hole moves upward to reset.

[0017] Beneficial effects: This utility model cleverly sets an independently sliding pressure core inside the irregular hole punch and is equipped with a special sliding drive mechanism. This allows the pressure core to extend and press the inner edge structure of the irregular hole in time at the critical moment when the punch completes the upward reset after punching. This action effectively counteracts the tendency of the inner edge structure to bend upward due to the scraping effect, and fundamentally prevents the deformation and warping of the inner edge structure. At the same time, the pressure core can be retracted in advance when the irregular hole punch moves downward, without affecting the normal punching process. Attached Figure Description

[0018] Figure 1 Sheet metal parts used to reinforce the side and top walls of a wind turbine housing;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is an exploded view of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of a specific embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a punching device for irregular holes in sheet metal with a core structure to suppress sheet metal deformation includes an irregular hole punch 2, which is installed on the drive end 3 of a press and is used to punch irregular holes 1a on a sheet metal part 1 when the press is driven downward. The irregular hole punch 2 has a core cavity 20 extending vertically inside, and a core 4 is slidably disposed in the core cavity 20. The core 4 is connected to an independent sliding drive mechanism 5. When the irregular hole punch 2 punches downward, the sliding drive mechanism 5 drives the core 4 to move upward and hide in the core cavity 20. When the irregular hole punch 2 moves upward and resets, the sliding drive mechanism 5 drives the core 4 to extend downward out of the core cavity 20 and press against the inner edge structure 1b of the irregular hole 1a. When the punch 2 moves downward, the pressure core 4 retracts to avoid obstructing the punching process and ensure that the punch 1a is formed completely. When the punch 2 moves upward, the pressure core 4 extends actively to press down on the inner edge structure 1b and apply a downward pressure to the inner edge structure 1b in the opposite direction to the punch's reset direction. This overcomes the scraping force of the punch 2 on the inner edge structure 1b, prevents deformation of the inner edge structure 1b from the source, and ensures the punching quality.

[0024] like Figure 2 and Figure 3 As shown, the irregular hole punch 2 includes an integrally formed mounting section 2a, a guide section 2b, and a working section 2c from top to bottom, ensuring the overall strength of the punch. The core cavity 20 extends from the guide section 2b and extends through the working section 2c. During the punching process, the pressure core 4 moves upward under the action of the sliding drive mechanism 5 and is completely accommodated inside the guide section 2b. The mounting section 2a facilitates reliable connection with the press drive end 3. The guide section 2b provides a sufficiently long sliding mating surface for the pressure core 4, ensuring stable and non-skewed movement of the pressure core 4 and preventing it from jamming or wearing. The working section 2c is responsible for punching and forming.

[0025] The press drive end 3 is provided with a mounting cavity 30 that is adapted to the mounting section 2a. The mounting section 2a is assembled in the mounting cavity 30, which realizes the rapid and accurate positioning of the irregular hole punch 2. It is fixed by the fastening mechanism 6 to ensure that the installation is firm and to prevent the punch from loosening or falling off under frequent impact loads, thus ensuring the safety and reliability of operation.

[0026] As a preferred embodiment, the fastening mechanism 6 is a bolt and nut assembly.

[0027] This utility model also includes a pressure core connector 7 connected to the pressure core 4, and the sliding drive mechanism 5 is connected to the pressure core 4 through the pressure core connector 7. Moreover, the pressure core 4 and the pressure core connector 7 are integrally formed, eliminating connection gaps and the possibility of loosening, improving the overall rigidity and motion accuracy of the pressure core assembly, making its response faster, and transmitting downward pressure more directly and evenly.

[0028] This utility model also includes a drive mounting base 8 disposed on the side of the drive end 3 of the press, on which the sliding drive mechanism 5 is mounted. The drive mounting base 8 provides an independent and stable mounting base for the sliding drive mechanism 5, so that it does not depend on the installation of the punch itself, avoiding the direct transmission of vibration and impact loads to the sliding drive mechanism 5, and improving stability.

[0029] More specifically, the sliding drive mechanism 5 is a cylinder or an electric push rod. The cylinder and electric push rod can provide precise linear motion and sufficient thrust, and are reliable power sources for realizing the reciprocating motion of the pressure core 4. Its installation direction is parallel to the running direction of the irregular hole punch 2, which makes the whole device compact, the force flow is directly transmitted, and no additional lateral force is generated.

[0030] The sliding drive mechanism 5 is electrically connected to the control system of the press to control the retraction of the pressure core 4 when the punch 2 moves downward to punch, and to control the extension of the pressure core 4 when the punch 2 moves upward to reset, thus realizing fully automatic and precise control.

[0031] This invention cleverly incorporates an independently sliding pressure core within the punch for irregularly shaped holes, coupled with a specialized sliding drive mechanism. This allows the pressure core to extend and press against the inner edge structure of the irregular hole at the crucial moment when the punch completes its upward repositioning after blanking. This action effectively counteracts the upward bending tendency of the inner edge structure caused by scraping, fundamentally preventing deformation and warping of the inner edge structure, and significantly improving the blanking quality and yield of irregularly shaped holes. Simultaneously, the pressure core can retract before the punch descends, without affecting the normal punching process. This ensures the stability of sheet metal punching quality and reduces reliance on subsequent correction processes.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A punching device for irregular hole of sheet metal with pressure core structure to suppress sheet metal deformation, including irregular hole punch (2), which is installed on the drive end (3) of press and is used to punch irregular hole (1a) on sheet metal (1) when the press is driven downward. Its features are: The irregular hole punch (2) has a core cavity (20) extending vertically inside, and a pressure core (4) is slidably disposed in the core cavity (20). The pressure core (4) is connected to an independent sliding drive mechanism (5). When the irregular hole punch (2) punches downwards, the sliding drive mechanism (5) drives the pressure core (4) to move upwards and hide in the core cavity (20); When the punch (2) moves upward to reset, the sliding drive mechanism (5) drives the pressure core (4) to extend downward into the core cavity (20) and press against the inner edge structure (1b) of the irregular hole (1a).

2. The punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 1, characterized in that: The irregular hole punch (2) includes an installation section (2a), a guide section (2b) and a working section (2c) integrally formed from top to bottom; the core cavity (20) extends from the guide section (2b) and extends through to the working section (2c). During the punching process, the pressure core (4) moves upward under the action of the sliding drive mechanism (5) and is completely contained inside the guide section (2b).

3. The punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 2, characterized in that: The press drive end (3) is provided with a mounting cavity (30) that is adapted to the mounting section (2a). The mounting section (2a) is assembled in the mounting cavity (30) and fixed by a fastening mechanism (6).

4. The punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 3, characterized in that: The fastening mechanism (6) is a bolt and nut assembly.

5. The punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 3, characterized in that: It also includes a core connector (7) connected to the core (4), through which the sliding drive mechanism (5) is connected to the core (4).

6. The punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 5, characterized in that: The core (4) and the core connection part (7) are integrally formed.

7. The punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 5, characterized in that: It also includes a drive mounting base (8) disposed on the side of the press drive end (3), on which the sliding drive mechanism (5) is mounted.

8. The punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 7, characterized in that: The sliding drive mechanism (5) is a cylinder or an electric push rod, and its installation direction is parallel to the running direction of the irregular hole punch (2).

9. A punching device for irregularly shaped holes with a core-pressing structure to suppress sheet metal deformation according to claim 1, characterized in that: The sliding drive mechanism (5) is electrically connected to the control system of the press to control the core (4) to retract when the punch (2) moves downward to punch, and to control the core (4) to extend when the punch (2) moves upward to reset.

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