Adjustable traceless pre-breaking structure of stamping die

Abstract

The utility model discloses an adjustable traceless pre-breaking structure of a stamping die, which relates to the technical field of stamping dies and comprises an upper die holder, a lower die holder, a floating component and a punch, the floating component is arranged at the critical position of one side of the lower die holder, and the floating component can coaxially float up and down along the side wall of the lower die holder; the upper end of the lower die base is used for bearing a strip, the upper end of the floating material assembly is used for bearing a terminal, and the joint of the terminal and the strip is located at the joint position of the lower die base and the floating material assembly. An upper die base is arranged above the floating material assembly, a punch is fixedly installed at the front end of the upper die base, the punch is arranged above the joint position of the lower die base and the floating material assembly, and the upper die base can move up and down to drive and extrude the floating material assembly and the terminal on the floating material assembly to move up and down synchronously. A terminal product processed by the structure is smooth and complete in joint, has no pressed inclined plane and metal wire, and can be suitable for any shape.

Description

Technical Field

[0001] The present application relates to the technical field of stamping dies, and in particular to an adjustable markless pre-breaking structure of a stamping die. Background Art

[0002] At present, the terminals are usually made by stamping in the prior art. Figure 6 The stamping structure shown in the figure separates the terminal from the strip. The traditional pre-cutting processing method will have a thinned slope in the material, and metal wire will be generated at the pre-cut position, such as Figure 7 As shown, metal wire burrs will be generated on the cross-section, and traditional pre-cutting processing methods can only be applied to the straight surface area. The current processing methods have problems: 1. The existing process can only be applied to the straight connection area of ​​terminal products and cannot be used for special shapes such as curved surfaces; 2. When using the existing process, part of the terminal will be squeezed and deformed, and burrs and metal wires will be generated at the break. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes an adjustable markless pre-breaking structure of a stamping die.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] A stamping die has an adjustable markless pre-breaking structure, comprising an upper die base, a lower die base, a floating material assembly and a punch. A floating material assembly is provided on one side of the lower die base, and the floating material assembly can float up and down coaxially along the side wall of the lower die base; the upper end of the lower die base is used to carry the strip, and the upper end of the floating material assembly is used to carry the terminal, and the connection between the terminal and the strip is located at the joint between the lower die base and the floating material assembly; an upper die base is provided above the floating material assembly, and a punch is fixedly installed at the front end of the upper die base, and the punch is provided above the joint between the lower die base and the floating material assembly. The upper die base can move up and down, driving the extrusion floating material assembly and the terminals on the floating material assembly to move up and down synchronously.

[0006] Moreover, the cutting shape of the punch is a straight line, an arc or other shapes.

[0007] Moreover, the float assembly includes a float block and a spring, the lower end of the float block abuts against the spring

[0008] Moreover, the upper end surfaces of the lower die base and the floating material assembly adopt a flat structure.

[0009] Moreover, an oblique wedge rod is abutted against the upper portion of the upper die seat, and the oblique wedge rod can be moved to adjust the height position of the punch.

[0010] The advantages and positive effects of the utility model are:

[0011] 1. The terminal products processed by this structure have smooth and complete connections, without pressed bevels and metal wires, and can be adapted to any shape.

[0012] 2. This solution can adjust the pre-cut shear depth by moving the inclined wedge rod forward and backward, and adjust the breaking operating force required in the subsequent process.

[0013] 3. This solution is applicable to the development of all carrier-connected terminals and metal parts, and has special advantages for metal connections of pressed injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure.

[0016] Figure 2 yes Figure 1 A partial enlarged view of part A in the middle.

[0017] Figure 3 It is a schematic diagram of the structure in the downward pressure state.

[0018] Figure 4 This is a schematic diagram of the restored state of the structure.

[0019] Figure 5 This is a schematic diagram of the terminal structure processed by this structure.

[0020] Figure 6 It is a schematic diagram of the structure of a punch press in the prior art.

[0021] Figure 7 It is a terminal schematic diagram of the prior art.

[0022] The marks in the figure indicate: 1. wedge rod; 2. upper die base; 21. punch; 3. terminal; 4. strip; 5. float; 6. spring; 7. lower die base. DETAILED DESCRIPTION

[0023] In order to make the structure and advantages of the present invention more clear, the structure of the present invention will be further described below with reference to the accompanying drawings.

[0024] The vertical direction, horizontal direction, front end, rear end, etc. in this embodiment are all relative position descriptions and do not limit the actual direction of the product.

[0025] Terminal: The conductor part at the end of the circuit in the connector. The conduction between circuits is connected through the terminal.

[0026] Material strip: A carrier strip that connects terminals, connects and fixes terminals, and provides support for subsequent assembly.

[0027] A stamping die has an adjustable markless pre-breaking structure, comprising an upper die base 2, a lower die base 7, a floating material assembly and a punch 21. A floating material assembly is provided on one side of the lower die base 7, and the floating material assembly can float up and down coaxially along the side wall of the lower die base 7; the upper end of the lower die base 7 is used to carry the strip 4, and the upper end of the floating material assembly is used to carry the terminal 3, and the connection between the terminal 3 and the strip 4 is located at the joint position between the lower die base 7 and the floating material assembly; the upper end surfaces of the lower die base 7 and the floating material assembly are designed to be flat, which is convenient for replacement and maintenance.

[0028] An upper die base 2 is provided above the float assembly. A punch 21 is fixedly mounted at the front end of the upper die base 2. The cutting shape of the punch 21 can be designed to any shape as required. The punch shown in this embodiment is an arc structure, which breaks away from the limitations of traditional straight line design. The working end of the punch is provided above the joint between the lower die base 7 and the float assembly. The upper die base 2 can move up and down, driving the punch 21 to quickly punch down and cut off the connection between the terminal 3 and the strip 4, driving the extruded float assembly and the terminal 3 on the float assembly to move up and down synchronously. When the punch is in the downward pressing state, the upper die punch and the float assembly are staggered to form a pre-cut shear cut. The float assembly is an elastic structure. When the punch press moves upward, the float block 5 carrier supports the terminal 3 to achieve flushness with the surface of the strip.

[0029] The float assembly includes a float block 5 and a spring 6. The lower end of the float block 5 abuts against the spring 6. The preload of the spring 6 maintains the upper end of the float block 5 flush with the upper end of the lower die base 7. The spring 6 can deform and expand to match the rise and fall of the punch, and its deformation recovery properties provide a certain buffer against the impact force of the pre-break punch.

[0030] The upper part of the upper die base 2 abuts against the inclined wedge rod 1. By pushing the inclined wedge rod 1, the height position of the punch can be adjusted.

[0031] When the telescopic stroke distance of the buffer spring 6 changes, the buffering effect it provides also changes flexibly. The buffering protection effect of the equipment on the stamping pre-breaking process is stable and has high applicability after flexible adjustment.

[0032] The processing actions of this structure are:

[0033] When the punch press runs from top to bottom ( Figure 3 ), the oblique wedge rod and the punch that cooperates with it move downward, cooperate with the floating material component, press the terminal to achieve half shear of the material strip.

[0034] When the punch press runs from bottom to top ( Figure 4), the wedge rod and the punch matched with it move upward, and the floating block is lifted upward synchronously to support the terminal to achieve flushness with the surface of the strip.

[0035] See attached Figure 5 As shown, the pre-break portion of the terminal product processed by this structure is flat and smooth without any protrusions or depressions. After the pre-break portion of the terminal product is broken, the fracture is flat and smooth, with double bright bands on the upper and lower parts and a tearing band in the middle, without any metal wire.

[0036] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A stamping die with adjustable seamless pre-breaking structure, characterized in that: The invention comprises an upper die base (2), a lower die base (7), a floating material assembly and a punch (21); a floating material assembly is provided on one side of the lower die base (7); the floating material assembly can float up and down coaxially along the side wall of the lower die base (7); the upper end of the lower die base (7) is used to carry the strip material (4); the upper end of the floating material assembly is used to carry the terminal (3); the connection between the terminal (3) and the strip material (4) is located at the joint position between the lower die base (7) and the floating material assembly; an upper die base (2) is provided above the floating material assembly; the front end of the upper die base (2) is fixed with a punch (21); the punch (21) is provided above the joint position between the lower die base (7) and the floating material assembly; the upper die base (2) can move up and down, driving the extrusion floating material assembly and the terminal (3) on the floating material assembly to move up and down synchronously.

2. The stamping die adjustable seamless pre-breaking structure according to claim 1, characterized in that: The cutting shape of the punch (21) is a straight line or an arc.

3. The adjustable seamless pre-breaking structure of a stamping die according to claim 1, characterized in that: The floating material assembly comprises a floating block (5) and a spring (6), and the lower end of the floating block (5) abuts against the spring (6).

4. The adjustable seamless pre-breaking structure of a stamping die according to claim 1, characterized in that: The upper end surface of the lower die base (7) and the floating material assembly adopts a flat structure.

5. The adjustable seamless pre-breaking structure of a stamping die according to claim 1, characterized in that: The upper portion of the upper die seat (2) abuts against an inclined wedge rod (1), and the inclined wedge rod (1) can be moved to adjust the height position of the punch (21).

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