CN201791836U - Rotary crease-free plate bending female die - Google Patents

Abstract

The utility model discloses a rotary type crease-free sheet material bending female die, which comprises a male die and a bending female die base body, wherein the bending female die base body also comprises a bending groove, a spring, a rotary slider and an arc-shaped groove matched with the rotary slider, the rotary slider is arranged in the arc-shaped grooves at two sides of the bending groove, one end of the spring is connected with a limiting part at the outer side of the rotary slider, the other end of the spring is connected with the bending female die base body, the top surface of the rotary slider is of a plane structure, and the bottom surface of the rotary slider is of an arc structure; the utility model adopts the rotatable combined type bending female die, the structure is simple and compact, the interchangeability of key parts of the female die is enhanced, and the processing cost is reduced; the rotating sliding block is simultaneously subjected to acting force given by the plate and the spring in the bending process, so that the plate is not in a fulcrum stressed state, the friction between the plate and the rotating sliding block is reduced, the scratch of the bent outer side surface of the plate is avoided, and the phenomena of indentation and crease of the bent part of the plate in the prior art are effectively overcome.

Description

A Rotary Non-Crease Sheet Bending Die

technical field

The utility model relates to a bending die, in particular to a rotating die for bending sheet material without creases.

Background technique

The bending process is widely used, and it is an important process required for forming series products such as chassis, cabinets, doors and windows. However, after the ordinary bending die is formed, there are a large number of indentations and creases in the bending position of the product, which makes the product unable to meet the surface quality requirements. Existing bending dies are generally monolithic, and the die structure is fixed. When this type of structural mold is bent, because the product and the bending block are relatively sliding and frictional, the product is often scratched on the outer side of the bend. And the smaller the fillet of the die, the more serious the scratches.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a rotary non-crease sheet material bending die, compared with the prior art, to reduce the friction between the sheet material and the die, effectively It can effectively avoid the indentation and crease phenomenon at the bending place of the sheet.

The purpose of this utility model is achieved through the following technical solutions:

A rotary non-crease sheet metal bending die, comprising a punch and a bending die base, characterized in that: the bending die base also includes a bending groove, a spring, a rotating slider, and a rotating An arc-shaped groove matching the slider, the rotating slider is arranged in the arc-shaped groove on both sides of the bending groove, one end of the spring is connected to the limiting part on the outside of the rotating slider, and the other end is connected to the bending die base connect.

The top surface of the rotary slider is a plane structure, and the bottom surface is an arc structure. The arc surface of the rotary slider is placed in the arc groove.

During the bending process of sheet metal bending, the two rotating sliders rotate with the downward movement of the sheet metal bending punch, and at the same time, the spring connected to it is in a stretched state to give the two rotating sliders a direction opposite to the rotation direction. The tension, so the bending process does not belong to the bending under the fulcrum stress state.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

The utility model adopts a rotatable combined bending die, the structure is simple and compact, the interchangeability of the key parts of the die is enhanced, and the processing cost is reduced; the rotating slider is simultaneously given by the sheet material and the spring during the bending process. The active force makes the sheet not in the fulcrum stress state, reduces the friction between the sheet and the rotating slider, avoids the scratches on the outer surface of the sheet, and effectively overcomes the bending of the sheet in the prior art. Indentation and creases at bends.

Description of drawings

Fig. 1 is the structural representation when the bending die of the present invention is closed;

Fig. 2 is a schematic diagram of the structure of the bending die of the present invention when it is unscrewed.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example

As shown in Figure 1, the rotary type non-crease sheet metal bending die of the present invention includes a punch (not shown in the figure), a bending die base 1, and the bending die base 1 is also Including bending groove 1-1, spring 2, rotating slider 3, arc groove 1-2 matching with rotating slider 3, said rotating slider 3 is arranged in the arc groove on both sides of bending groove 1-1 Inside 1-2, the rotary slider 3 can rotate relative to the arc groove 1-2, one end of the spring 2 is connected to the limit part 3-1 outside the rotary slider 3, and the other end of the spring 2 is connected to the bending recess The mold base 1 is connected.

It can be seen from FIG. 1 that the top surface of the rotary slider 3 is a planar structure, and the bottom surface is an arc-shaped structure. When the rotary slider 3 is in the closed state (the top surface of the rotary slider 3 is not docked with the bending groove 1-1), under the pull-down force of the spring 2, the limiting part 3-1 of the rotary slider 3 and the matrix of the die The platforms 1-3 on both sides of the 1 offset each other, and the rotary slider 3 keeps the upper surface in a horizontal state.

It can be seen from FIG. 2 that the rotary slider 3 is in the unscrewed state, that is, the bending working state (at this time, the top surface of the rotary slider 3 is docked with the bending groove 1-1). The downward movement of the rotary slider 3 produces a rotary motion within a certain angle range (related to the bending angle, generally 90 degrees), while the spring 2 is also in a stretched state, and the rotary slider 3 is subjected to a pulling force opposite to the direction of rotation. At this time The sheet is simultaneously subjected to the downward pressure of the bending punch (not shown in the figure) and the force given by the rotating slider 3 caused by the tension of the spring 2, so that the sheet (not shown in the figure) is not at a fulcrum In the stressed state, the friction between the rotary slider 2 and the sheet can be reduced, thereby reducing the insertion and imprint of the rotary slider 2 on the sheet and improving the surface quality of the bent product.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (2)

1. A rotary-type no-crease sheet metal bending die, comprising a punch and a bending die base, is characterized in that: the bending die base also includes a bending groove, a spring, a rotary slide block, An arc-shaped groove matched with the rotating slider, the rotating slider is arranged in the arc-shaped grooves on both sides of the bending groove, one end of the spring is connected to the limiting part on the outside of the rotating slider, and the other end is connected to the bending recess Mold base connection. 2. The rotary non-crease sheet metal bending die according to claim 1, characterized in that: the top surface of the rotary slider is a plane structure, and the bottom surface is an arc structure.

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