Novel narrow-edge-distance punching structure

Abstract

The utility model relates to a novel narrow edge distance punching structure which comprises an upper die base, a punching assembly installed at the bottom end of the upper die base, a lower die base and a punching female die installed at the top end of the lower die base, the punching assembly comprises a stop plate, a stripper plate, a punch, a swing block base, swing blocks, a reset ejector rod and a reset spring, and the punching female die is correspondingly arranged below the two swing blocks. According to the novel narrow-edge-distance punching structure, the swing block base, the swing block, the reset ejector rod and the punch which are specially designed are matched with the punching female die, the two sides of a product can be limited and clamped during punching, local deformation of the product caused by punching is effectively reduced, and therefore the product structure of the extremely-small hole edge distance type can be completed through the punching technology, and the punching efficiency is improved. According to the invention, an extra complex process (such as laser cutting, etching and the like) is replaced, the manufacturing cost of a product is greatly reduced, and the structure can be independently applied to a single engineering mold and also can be applied to a continuous mold as a module.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a novel narrow-margin punching structure. Background Art

[0002] When stamping some products where the distance from the hole to the edge is less than 1.5 times the material thickness, (such as Figure 1 As shown, the product thickness is only 0.8mm and the distance to the edge is only 0.75). The punching force generated by the conventional stamping process will cause the material around the hole to be severely twisted and deformed, or even broken, so it needs to be improved. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a novel narrow-margin punching structure which is reliable and easy to install and can significantly improve product quality.

[0004] The utility model is realized through the following technical solutions:

[0005] A novel narrow margin punching structure comprises an upper die base, a punching assembly mounted on the bottom end of the upper die base, a lower die base and a punching die mounted on the top end of the lower die base, the punching assembly comprises an upper pad, a stop plate, a stripping plate, a punch, a swing block base, a swing block, a reset push rod and a reset spring, the upper pad is fixed to the bottom end of the upper die base, the stop plate is mounted on the bottom end of the upper pad, the stripping plate is mounted on the bottom end of the stop plate, the swing block base is fixed in the stripping plate, the swing blocks are a group, symmetrically arranged at the bottom end of the swing block base, the top end of the swing block and the bottom end of the swing block The seat is rotatably connected, and the bottom end of the pendulum block extends out of the pendulum block base, and a positioning space that can clamp the two sides of the product to be stamped is formed between the two pendulum blocks. The reset push rod is a group, which is symmetrically arranged in the pendulum block base. The bottom ends of the two reset push rods are respectively abutted against the two pendulum blocks, and the top ends of the two reset push rods are elastically connected to the stop plate through reset springs. The punch is installed at the bottom end of the upper pad, and the bottom end of the punch is guided by the pendulum block base. The punching die is correspondingly arranged under the two pendulum blocks, and the punching die has a hole for the punch to pass through, and the hole of the punching die is concentrically arranged with the punch.

[0006] In order to disassemble and assemble the components, an upper pad is fixed to the bottom end of the upper die base, an upper clamp is fixed to the bottom end of the upper pad, the stop plate is installed at the bottom end of the upper clamp, and the top end of the punch is fixed in the upper clamp.

[0007] In order to install the pendulum block and make it rotate, the bottom end of the pendulum block base is provided with mounting holes for respectively embedding the two pendulum blocks, and the top end of the pendulum block is provided with a columnar body rotatably connected to the mounting holes.

[0008] In order to limit the rotation range of the pendulum block so that it can accurately position and clamp the product, a limiting step is provided at the bottom center of the pendulum block base, and a gap is provided between the limiting step and the two pendulum blocks. The gap between the limiting step and the two pendulum blocks will be completely closed when working correctly.

[0009] In order to drive the pendulum block to rotate and reset, a T-shaped hole is provided in the pendulum block base for the reset push rod to slide up and down, and the step portion of the reset push rod is inserted into the T-shaped hole.

[0010] In order to disassemble and assemble the punching die, a lower pad is fixed on the top of the lower die base, a lower template is fixed on the top of the lower pad, and the punching die is installed in the lower template.

[0011] The beneficial effect of the utility model is that the new narrow margin punching structure cooperates with the specially designed swing block base, swing block, reset push rod, punch and punching die, which can limit and clamp the two sides of the product during stamping, effectively reducing the local deformation of the product caused by punching and shearing, so that the product structure with extremely small hole margin type can be completed by stamping process, replacing additional complex processes (such as laser cutting, etching, etc.), greatly reducing the manufacturing cost of the product. This structure can be used independently in a single engineering mold, and can also be used as a module in a continuous mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a narrow margin product in the prior art;

[0013] Figure 2 It is a structural schematic diagram of a novel narrow margin punching structure of the utility model;

[0014] Figure 3 for Figure 2 Schematic diagram of the local structure of part A;

[0015] Figure 4 It is a schematic diagram of the structure of the novel narrow margin punching structure of the utility model during punching;

[0016] Figure 5 This is a schematic structural diagram of the novel narrow margin punching structure of the utility model after punching is completed. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more specific definition of the protection scope of the present invention. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., are only for reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, rather than to limit the present invention.

[0018] like Figure 2 A new type of narrow margin punching structure shown in the figure includes an upper die base 1, a punching assembly installed on the bottom end of the upper die base 1, a lower die base 8 and a punching die installed on the top end of the lower die base 8, wherein an upper pad 2, an upper clamping plate 3, a stop plate 4 and a stripping plate 5 are fixed in sequence to the bottom end of the upper die base 1, and a lower pad 7 and a lower template 6 are fixed in sequence to the top end of the lower die base 8.

[0019] Specifically, combined Figure 3 As shown, the punching assembly includes a stop plate 4, a stripping plate 5, a punch 14, a pendulum block base 12, a pendulum block 13, a reset push rod 15 and a reset spring 16. The pendulum block base 12 is fixed in the stripping plate 5. Two symmetrically arranged mounting holes are provided at the bottom end of the pendulum block base 12. The pendulum blocks 13 are a group and are respectively installed in the two mounting holes. The top of the pendulum block 13 has a columnar body rotatably connected to the mounting hole. The bottom end of the pendulum block 13 extends out of the pendulum block base 12. The bottom end surface of the pendulum block 13 is a plane structure. A positioning space that can clamp both sides of the product 11 to be punched is formed between the two pendulum blocks 13. The pendulum block base 12 can press the product 11 to be punched. Before punching, when the bottom end of the pendulum block 13 contacts the punching die 9, the pendulum block 13 can rotate slightly upward around the columnar body. The center of the bottom end of the pendulum block base 12 has a limiting step 18. The positioning step 18 is arranged between the two pendulum blocks 13, and the bottom of the limiting step 18 and the top of the pendulum block 13 have inclined surfaces respectively. There is a gap between the limiting step 18 and the inclined surface of the pendulum block 13. The reset push rod 15 is a group, symmetrically arranged in the T-shaped hole of the pendulum block base 12, and abuts against the two pendulum blocks 13. The bottom ends of the two reset push rods 15 partially extend into the mounting hole, and the top ends of the two reset push rods 15 are elastically connected to the stop plate 4 through the reset spring 16 respectively. The bottom end of the stop plate 4 is fixed with a screw plug 17 for installing the reset spring 16. The top end of the punch 14 is fixed in the upper clamping plate 3, and the bottom end of the punch 14 passes through the stop plate 4 in sequence and enters the precision guide hole of the pendulum block base 12. The punching die 9 is installed in the lower template 6 and is correspondingly arranged below the two pendulum blocks 13. The hole 10 of the punching die 9 is designed to be concentric with the punch 14.

[0020] When stamping, Figure 4As shown, the power system drives the entire upper die downward, and the product 11 to be punched is supported by the punching die 9. When the two pendulum blocks 13 gradually contact the upper surface of the punching die 9, they begin to swing upward, the reset push rod 15 is lifted, and the reset spring 16 is contracted. The pendulum block 13 stops swinging under the action of the limiting step surface of the pendulum block base 12, and clamps the two sides of the product 11 to be punched. At the same time, the bottom surface of the pendulum block base 12 just presses the product 11 to be punched tightly against the top surface of the punching die 9, so that the product 11 to be punched is firmly fixed; the upper die continues to descend until the punching of the product 11 to be punched is completed, as shown in FIG. Figure 5 As shown, the punched waste falls through the hole of the punching die; after the punching is completed, the components are reset.

[0021] It should be noted that the parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.

[0022] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A novel narrow margin punching structure, comprising an upper die base, a punching assembly mounted on the bottom end of the upper die base, a lower die base and a punching die mounted on the top end of the lower die base, characterized in that: The cam is fixed to the bottom of the upper die seat, the stop plate is installed on the bottom of the upper die seat, the stripping plate is installed on the bottom of the stop plate, the cam base is fixed in the stripping plate, the cam base is fixed in the stripping plate, the cam blocks are a group, symmetrically arranged at the bottom of the cam base, the top of the cam block is rotatably connected to the cam base, the bottom of the cam block extends out of the cam base, and a positioning space is formed between the two cam blocks that can clamp the two sides of the product to be stamped. The reset push rod is a group, symmetrically arranged in the cam base, the bottom ends of the two reset push rods are respectively abutted against the two cam blocks, and the top ends of the two reset push rods are elastically connected to the stop plate by reset springs, the punch is installed at the bottom of the upper die plate, and the bottom end of the punch is guided by the cam base, the punching die is correspondingly arranged under the two cam blocks, the punching die has a hole for the punch to pass through, and the hole of the punching die is concentric with the punch.

2. The novel narrow margin punching structure according to claim 1 is characterized in that: An upper clamping plate is fixed at the bottom end of the upper pad, the stop plate is installed at the bottom end of the upper clamping plate, and the top end of the punch is fixed in the upper clamping plate.

3. The novel narrow margin punching structure according to claim 2 is characterized in that: The bottom end of the pendulum block base is provided with mounting holes for respectively embedding two pendulum blocks, and the top end of the pendulum block is provided with a columnar body rotatably connected to the mounting holes.

4. The novel narrow margin punching structure according to claim 3 is characterized in that: A limiting step is provided at the center of the bottom end of the pendulum block base, and a gap is provided between the limiting step and the two pendulum blocks. The gap between the limiting step and the two pendulum blocks will be completely closed during operation.

5. The novel narrow margin punching structure according to claim 4 is characterized in that: A T-shaped hole is provided in the pendulum block base for the reset push rod to slide up and down, and the step portion of the reset push rod is inserted into the T-shaped hole.

6. The novel narrow margin punching structure according to any one of claims 1 to 5, characterized in that: A lower pad is fixed on the top of the lower die seat, a lower template is fixed on the top of the lower pad, and the punching die is installed in the lower template.

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