CN202861183U - Multi-layer tapered-wedge type die used for stamping negative angle structure - Google Patents

Abstract

The utility model discloses a multi-layer oblique wedge mold for punching a negative-angle structure with a cover plate that can be taken out without avoiding, the plate is compressed without indentation and collapse, and the thickness of the cover plate is sufficiently thick. Plate, upper mold base, lower mold base, side trimming punch, side trimming knife block, cover plate, the upper mold pressing plate is pressed on the cover plate, the vertical line between the block line of the cover plate and the side trimming punch and the return port The planes are parallel, and the mold also includes a first upper mold drive block, a first pulley, a second pulley, and a side pressure plate of the upper die. The first upper die drive block is connected to the cover plate through the first pulley moving forward, and the upper die The pressing plate is driven by a nitrogen gas spring installed on the second pulley and pressed above the side adjustment punch.

Description

A Multi-Layered Wedge Die for Punching Negative Angle Structure

technical field

The utility model relates to the technical field of moulds, in particular to a multi-layer wedge-shaped mold for stamping negative angle structures.

Background technique

At present, the overall side wall A-pillar and top of the car adopt a negative angle structure, which is generally completed by side shaping. In the traditional multi-layer wedge mold for stamping the negative angle structure, as shown in Figure 1, the arrow indicates the direction of taking out the upper die pressing plate 1, the side trimming punch 7, and the side trimming block 9, and the cover plate 6 is fixed on the lower mold base 4, the block line of the cover plate 6 and the side adjustment punch 7 is parallel to the upper edge of the two sides of the negative angle and obliquely intersects with the facade of the door opening (return port), and is used when returning the material The side trimming punch forming the negative angle structure retreats first, and then the lower mold base withdraws, so as to ensure that the workpiece can be taken out. The compression of the cover plate is provided by the pressing plate 1 of the upper die. However, the disadvantages of this multi-layer wedge mold for stamping negative angle structures are: 1. When the negative angle depth is large and the structural space is small, the front end of the cover plate needs to be avoided (shown by line a), otherwise the workpiece cannot take out. 2. The resulting defect is that the lower mold surface has no surface support locally, and the upper mold pressing plate 1 cannot press the workpiece tightly, and it is very easy to cause indentation or even collapse on the A surface. 3. The thickness of the cover plate at the lower sealing ring part of the door opening (return port) (shown in circle b) is very thin, and may even be pierced. It is easy to deform or even break during processing and work. Moreover, the cover plate cannot withstand the pressure of the upper die pressing the material plate (to avoid breakage), so the risk of deformation of this part during the stamping process cannot be avoided.

Contents of the invention

In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a cover plate that can be taken out without avoidance, the plate is pressed without indentation and collapse, and the thickness of the cover plate is thick enough for stamping. Multi-layer wedge mold with angular structure.

The technical solution of the utility model is: the multi-layer oblique wedge mold used for stamping negative angle structure, which includes upper mold pressing plate, upper mold base, lower mold base, side trimming punch, side trimming knife block, cover plate, the upper mold pressing plate is pressed on the cover plate, and the block line of the cover plate and the side adjustment punch is parallel to the elevation of the ejection port. The mold also includes the first upper mold driving block, the first pulley, and the second pulley 1. The upper mold side pressure plate, the first upper mold driving block is connected to the cover plate through the first pulley moving forward, the upper mold side pressure plate is driven by the nitrogen spring installed on the second pulley and pressed above the side adjustment punch.

Since the block line of the cover plate and the side adjustment punch is parallel to the elevation of the ejection port, the block line of the cover plate and the side adjustment punch obliquely intersects with the upper edge of the two sides of the negative angle, and the cover plate is It is movable, so it is possible to take out the cover plate first and then take out the side adjustment punch, so that the cover plate can be taken out without avoiding the workpiece; because the upper mold side pressure plate is set, the plate is pressed without indentation collapse; because The block line of the cover plate and the side adjustment punch is parallel to the elevation of the ejection port, so the cover plate can be made thick enough.

Description of drawings

Fig. 1 is the structural representation of the multi-layer wedge type mold that is used for stamping negative angle structure of prior art;

Fig. 2 is a structural schematic view of the closed multi-layer wedge mold for stamping negative angle structures according to the present invention.

Detailed ways

As shown in Figure 2, this kind of multi-layer wedge mold for stamping negative angle structure includes an upper mold pressing plate 1, an upper mold base 2, a lower mold base 4, a side adjustment punch 7, and a side adjustment knife block 9. The cover plate 6, the upper mold pressing plate 1 is pressed on the cover plate 6, the block line of the cover plate 6 and the side adjustment punch 7 is parallel to the elevation of the ejection port, and the mold also includes the first upper mold driving block 3. The first pulley 5, the second pulley 10, the upper mold side pressure plate 11, the first upper mold drive block 3 is connected to the cover plate 6 through the first pulley 5 that moves forward, and the upper mold side pressure plate 11 is installed on the second The nitrogen gas spring on the two pulleys 10 drives and is pressed on the side adjustment punch 7 tops.

Since the block line of the cover plate and the side adjustment punch is parallel to the elevation of the ejection port, the block line of the cover plate and the side adjustment punch obliquely intersects with the upper edge of the two sides of the negative angle, and the cover plate is It is movable, so it is possible to take out the cover plate first and then take out the side adjustment punch, so that the cover plate can be taken out without avoiding the workpiece; because the upper mold side pressure plate is set, the plate is pressed without indentation collapse; because The block line of the cover plate and the side adjustment punch is parallel to the elevation of the ejection port, so the cover plate can be made thick enough.

Preferably, a bottom pad is also provided on the cover plate. Through the side adjustment punch 7, the force in the direction Z perpendicular to the cover plate is transmitted to the bottom surface of the lower mold seat, and the condition of the cover plate bearing the pressing force is significantly improved. It avoids the problem that in the traditional formwork, the cover plate is completely suspended in the Z direction, and the cover plate is deformed or even broken when it is pressed by the upper mold pressing plate.

Preferably, a side pressing plate 8 of the lower mold is provided on the side of the side adjustment punch. Before the side trimming block 9 works, the plate at the tail of the shaping area is pressed tightly. During the side trimming process, the tension of the plate is controlled. It effectively solves the problem of wrinkling in the plastic surgery area caused by the free shaping of the side plastic parts.

The working principle of the multi-layer wedge die for stamping negative angle structure is as follows:

During the mold closing process, the first upper mold driving block 3 pushes the first pulley 5 to move forward in translation, and the first pulley 5 pushes the cover plate 6 into place through the stroke back plate; the upper mold side pressure plate 11 is installed on the second pulley 10 Nitrogen gas spring drive. Since the cover plate adopts a sliding method, when the mold is opened, the cover plate has been retracted under the action of the nitrogen gas spring. When the part is taken out, there is no need to consider the avoidance of the negative angle of the part, and the plate part is completely attached to the lower model at the working part. It solves the problem that the cover plate of the traditional mold is fixed and locked on the lower mold base, and a large part of the cover plate needs to be cut off to avoid the negative corner of the part when the part is taken out, causing the surface of the lower model to hang in the air. After the upper die pressing plate presses the part , because the plate cannot fully fit the lower model in the working part, leaving an impression or even collapse on the part.

The parameters of the mold have been carefully optimized, and it is suitable for the negative angle parts with compact space of complex parts such as the overall side wall and fender, and its beneficial effects are as follows:

1. Reasonable structure, compact layout, stable and efficient work.

2. Compared with traditional molds, it is more excellent. The strength of the mold is good, which improves the service life of the mold.

3. After adopting the mold, surface defects are avoided, and the quality of parts is significantly improved.

4. The grinding process is no longer needed in the production of parts, which improves the production efficiency of parts and reduces the labor intensity of workers.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model are valid. It still belongs to the protection scope of the technical solution of the utility model.

Claims (3)

1. Multilayer inclined wedge formula mould that is used for the punching press shaped negative angle structures, it comprises patrix holding pad (1), upper bolster (2), die shoe (4), the whole punch of side (7), the whole cutter piece of side (9), cover plate (6), patrix holding pad (1) is pressed on the cover plate (6), it is characterized in that: cover plate (6) is parallel with the facade of material returned mouth with the piecemeal line of the whole punch of side (7), this mould also comprises the first patrix drive block (3), the first coaster (5), the second coaster (10), patrix side guide (11), the first patrix drive block (3) is connected to cover plate (6) by first coaster (5) of forward translation, and patrix side guide (11) drives and be pressed in the whole punch of side (7) top by the nitrogen spring that is installed on the second coaster (10).

2. the Multilayer inclined wedge formula mould for the punching press shaped negative angle structures according to claim 1 is characterized in that: on the cover board also be provided with on earth cushion block.

3. the Multilayer inclined wedge formula mould for the punching press shaped negative angle structures according to claim 1 is characterized in that: be provided with counterdie side guide (8) in the side of the whole punch of side.

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