A dynamic positioning structure for workpiece sheet of a stamping die

Abstract

This invention provides a dynamic positioning structure for a workpiece plate of a stamping die, including a fixed column, a pin, and an eccentric support pendulum. The fixed column has a hollow portion. The pin is laterally fixed within the hollow portion. The eccentric support pendulum includes a main body and a support step. The support step is located on the outer edge of the main body, and the eccentric support pendulum is oscillatingly fitted onto the pin. When the workpiece plate needs positioning, the eccentric support pendulum is in its natural state under the action of gravity, with the main body hidden within the hollow portion, and the support step protruding precisely from the hollow portion, providing support for the edge of the workpiece plate. When the workpiece plate is subjected to the impact force of the upper die punch, the impact force is transmitted to the support step, generating a torque that causes the eccentric support pendulum to swing inward instantaneously, thereby causing the support step to retract instantly into the hollow portion, automatically releasing the support and making room for the upper die punch to press. This invention can achieve temporary stable support for the workpiece without affecting the punch's movement during the stamping process.

Description

[Technical Field]

[0001] This utility model relates to a positioning structure for the workpiece plate of a stamping die, which is mainly applicable to the scenario of temporary positioning and support of the workpiece plate during the stamping process. [Background Technology]

[0002] Stamping dies are widely used in industrial production for stamping sheet metal or other materials. During the stamping process, accurate workpiece positioning and stable support are crucial, directly affecting stamping quality and die life. Currently, stamping die positioning technology is relatively mature, but traditional fixed support methods often fail to meet the requirements for workpieces with complex shapes or varying sizes of stamped parts. With the diversification of industrial products, higher demands are placed on the positioning structure of stamping dies, requiring solutions that provide stable support without interfering with the stamping action.

[0003] In existing technologies, common workpiece positioning methods include: a) using fixed positioning pins, achieving positioning through rigid contact. This method has a simple structure but poor adaptability; b) using elastic support components, such as spring support columns, which can adapt to different workpiece shapes to a certain extent, but the support force is unstable; c) setting adjustable support blocks, allowing manual or automatic adjustment of the support position, offering good flexibility but with a complex structure. Each of these solutions has its advantages and disadvantages. Fixed positioning pins are low-cost but cannot adapt to changes in the workpiece; elastic support components offer good adaptability but low precision; and adjustable support blocks offer comprehensive functionality but have high maintenance costs.

[0004] like Figure 1 The workpiece 300 shown requires a bent portion 301 to be punched out from a flat workpiece raw material block 400. For example... Figure 2 As shown, the workpiece raw material block 400 is currently positioned on the lower die 200 by the elastic pin 203 on the punch 202 and the surrounding limiting posts 204. Before stamping, the middle part of the workpiece raw material block 400 is limited by the positioning pin 203, and the periphery is laterally limited by the limiting posts 204. However, the material forming the bend deviates far from the positioning pin, causing a serious deviation in the center of gravity. The surrounding positioning posts 204 can only play a lateral positioning role and cannot play a longitudinal support role, causing the workpiece raw material block 400 to wobble due to the instability of the center of gravity. If conventional longitudinal fixing support is added, it will act as a blockage when the upper die punch presses downward, preventing the formation of the bend 301. This creates a contradiction between longitudinal support and smooth stamping.

[0005] In summary, the main drawback of existing lower die positioning technology is its inability to simultaneously meet the requirements of stable support and non-interference with the stamping action. Longitudinal fixed support can affect the normal operation of the punch, preventing the stamping action from being completed. [Utility Model Content]

[0006] Therefore, the technical problem to be solved by this utility model is to provide a dynamic positioning structure for the workpiece plate of a stamping die, which can achieve temporary stable support for the workpiece plate in the stamping die, while not affecting the action of the punch during the stamping process.

[0007] To achieve the aforementioned objective, the technical solution adopted in this utility model embodiment is: a dynamic positioning structure for the workpiece plate of a stamping die, comprising a fixed column, a pin, and an eccentric support pendulum;

[0008] The fixing column has a hollow section;

[0009] The pin is fixed laterally inside the hollowed-out portion;

[0010] The eccentric support pendulum includes a main body and a support step. The support step is located on the outer edge of the main body, and the eccentric support pendulum is oscillatingly sleeved on the pin.

[0011] When the workpiece plate is statically positioned on the lower mold, the eccentric support is in a natural state under the action of gravity, the main body is hidden in the hollow part, and the support step just protrudes from the hollow part and provides support for the edge of the workpiece plate.

[0012] When the workpiece plate is subjected to the impact force of the upper die punch, the impact force is transmitted to the support step, generating a torque that causes the eccentric support pendulum to swing inward instantaneously, thereby causing the support step to retract into the hollow part instantly, automatically releasing the support and making room for the upper die punch to press.

[0013] Furthermore, the fixing post is detachably fixed to the lower die base of the stamping die.

[0014] The advantages of this invention are as follows: This invention provides a dynamic longitudinal support structure for the workpiece through the swinging of an eccentric support pendulum. When the workpiece plate is statically positioned on the lower die, the eccentric support pendulum, under the action of gravity, hides its main body within the hollowed-out portion, with only the support step protruding slightly from the hollowed-out portion, providing support for the edge of the workpiece plate. When the workpiece plate is subjected to the impact force of the upper die punch, the impact force is transmitted through the edge of the workpiece plate to the support step, generating a torque that causes the eccentric support pendulum to swing inward instantaneously. This causes the support step to instantly retract into the hollowed-out portion, automatically releasing the support and making room for the upper die punch to press, effectively preventing instability of the workpiece plate's center of gravity, and completely unaffecting the normal operation of the upper die punch. This invention has a simple and reliable structure, achieving two stable states solely through gravity and the impact force of the upper die punch. It requires no additional power source, has low maintenance costs, and is highly adaptable, suitable for workpieces of different shapes and sizes. [Attached Image Description]

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a structural schematic diagram of a finished workpiece.

[0017] Figure 2 This is a three-dimensional structural diagram of the existing positioning structure of a stamping die.

[0018] Figure 3 This is a three-dimensional structural diagram of the workpiece dynamic positioning structure of this utility model.

[0019] Figure 4 This is a cross-sectional view of the workpiece dynamic positioning structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the installation state of the workpiece dynamic positioning structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the working body dynamic positioning structure of this utility model in use.

Detailed Implementation Methods

[0022] This utility model provides a dynamic positioning structure for the workpiece plate of a stamping die, which can achieve temporary stable support for the workpiece plate in the stamping die, while not affecting the action of the punch during the stamping process.

[0023] The technical solution in this embodiment of the present invention addresses the aforementioned problems. The overall concept is as follows: The dynamic positioning structure of the workpiece plate of this invention includes a fixed column, a pin, and an eccentric support pendulum. The oscillation of the eccentric support pendulum provides a dynamic longitudinal support structure for the workpiece plate. When the workpiece plate is statically positioned on the lower die, the eccentric support pendulum, under the influence of gravity, hides its main body within the hollowed-out portion, with only the support step protruding slightly from the hollowed-out portion, providing support for the edge of the workpiece plate. When the workpiece plate is subjected to the impact force of the upper die punch, the impact force is transmitted to the support step, generating a torque that causes the eccentric support pendulum to swing inward instantaneously. This causes the support step to instantly retract into the hollowed-out portion, automatically releasing the support and creating space for the upper die punch to press, effectively preventing instability of the workpiece plate's center of gravity and completely unaffecting the normal operation of the upper die punch. This invention has a simple and reliable structure, achieving two stable states solely through gravity and the impact force of the upper die punch. It requires no additional power source, has low maintenance costs, and is highly adaptable, suitable for workpieces of different shapes and sizes.

[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0025] Please see Figures 3 to 6As shown, the present invention provides a dynamic positioning structure 100 for a workpiece plate of a stamping die, comprising a fixed column 1, a pin 2, and an eccentric support pendulum 3.

[0026] The fixing column 1 is used to be erected on the lower die base 201 of the stamping die, and has a hollow part 11;

[0027] The pin 2 is horizontally fixed inside the hollowed-out part 11;

[0028] The eccentric support pendulum 3 includes a main body 31 and a support step 32. The support step 32 is located on the outer edge of the main body 31, and the eccentric support pendulum 3 is oscillatingly sleeved on the pin 2.

[0029] When the workpiece plate 400 is positioned on the lower mold 200, the eccentric support pendulum 3 is in a natural state under the action of gravity, the main body 31 is hidden in the hollow part 11, and the support step 32 just protrudes from the hollow part 11 and provides support for the edge of the workpiece plate 400.

[0030] When the workpiece plate 400 is subjected to the impact force of the upper die punch, the impact force is transmitted through the edge of the workpiece plate 400 to the support step 32, generating a torque that causes the eccentric support pendulum 3 to swing inward instantly, thereby causing the support step 32 to retract into the hollow part 11 instantly, automatically releasing the support and making room for the upper die punch to press.

[0031] Thus, the support step 32 of the eccentric support pendulum 3 achieves dynamic positioning of the workpiece plate 400.

[0032] Furthermore, in use, first assemble the various components of the dynamic positioning structure 100, and fix the bottom of the fixing column 1 to the lower mold base 201. Preferably, the fixing column 100 can be fixed to the lower mold base 201 in a detachable manner for easy individual processing.

[0033] The working process and working principle of this utility model are as follows:

[0034] 1. For example Figure 5 As shown, the fixing post 1 is fixed on the lower mold base 201 of the lower mold 200. At the same time, the lower mold base is also provided with a punch 202, the punch 202 is provided with an elastic pin 203, and the periphery of the punch 202 is also provided with a limiting post 204.

[0035] 2. For example Figure 6 As shown, the workpiece plate 400 is placed on the punch 202, the middle part is limited by the elastic pin 203, the periphery is limited laterally by the limiting post 204, and the part to be bent is supported longitudinally by the support step 32 of the fixed post 100, so that the center of gravity of the workpiece plate 400 is stable.

[0036] 3. Press down the upper die punch to generate a downward impact force on the workpiece plate 400. This impact force causes the elastic pin 203 to retract and is transmitted to the support step 32 through the edge of the workpiece plate 400, generating a torque that causes the eccentric support pendulum 3 to swing inward instantaneously. This causes the support step 32 to retract into the hollow part 11 instantly, automatically releasing the support and making room for the upper die punch to press, thus successfully realizing the pressing of the bent part and obtaining the finished workpiece 300.

[0037] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A dynamic positioning structure of a workpiece stock sheet of a press die, characterized by: This includes a fixed column, a pin shaft, and an eccentrically supported pendulum; The fixing column has a hollow section; The pin is fixed laterally inside the hollowed-out portion; The eccentric support pendulum includes a main body and a support step. The support step is located on the outer edge of the main body, and the eccentric support pendulum is oscillatingly sleeved on the pin. When the workpiece plate needs to be positioned, the eccentric support is in a natural state under the action of gravity, the main body is hidden in the hollow part, and the support step just protrudes from the hollow part and provides support for the edge of the workpiece plate; When the workpiece plate is subjected to the impact force of the upper die punch, the impact force is transmitted to the support step, generating a torque that causes the eccentric support pendulum to swing inward instantaneously, thereby causing the support step to retract into the hollow part instantly, automatically releasing the support and making room for the upper die punch to press.

2. The workpiece material sheet dynamic positioning structure of a stamping die according to claim 1, characterized in that: The fixing column is detachably fixed to the lower die base of the stamping die.

Images