CN101885023A

CN101885023A - Metal sheet molding die

Info

Publication number: CN101885023A
Application number: CN 201010220874
Authority: CN
Inventors: 邓斌; 王明权
Original assignee: JURONG CITY SANYUAN PAIL CO Ltd
Current assignee: JURONG CITY SANYUAN PAIL CO Ltd
Priority date: 2010-07-07
Filing date: 2010-07-07
Publication date: 2010-11-17

Abstract

The invention discloses a metal sheet molding die. The molding die comprises a female die and a male die, wherein the caliber size of a concave part of the female die is the same as that of a corresponding convex part of the metal sheet; the projection height of the male die is the same as the depression depth of a corresponding concave part of the metal sheet; the cross sectional shape of the caliber of the concave part of the female die can be different from that of the caliber of the corresponding convex part of the metal sheet; and the cross sectional shape of the caliber of the convex part of the male die can be different from that of the caliber of the corresponding concave part of the metal sheet. Compared with the prior art, the die of the invention is simple to process, has low manufacturing cost and is economical and practical; friction between the inclined surface and the curved surface of a workpiece is prevented by gap molding and the surface of a product is smooth, round, scratch-free and attractive; and when the die is used, a machine tool and the die per se are difficult to damage in installation and debugging processes and convenient use is achieved.

Description

A kind of metal sheet molding die

Technical field

The present invention relates to a kind of mould, is a kind of metal sheet molding die specifically.

Background technology

Sheet metal punch process application is very extensive, not only change thin sheet form, make it elegant in appearance, under requiring, same intensity can adopt thinner material simultaneously, but traditional processing technology requires the mould and die accuracy height, and processed complex, die cost height, use inconveniently, be easy to cause the damage of equipment and mold.

Summary of the invention

Goal of the invention: the objective of the invention is provides a kind of metal sheet molding die in order to overcome the deficiencies in the prior art, adopts die clearance method moulding, low to the mould and die accuracy requirement, and is difficult for causing the damage of equipment and mold.

Technical scheme: in order to solve the problems of the technologies described above, the technical solution used in the present invention is:

A kind of metal sheet molding die comprises die and punch, and the footpath mouth size of the depressed part of described die and the footpath mouth of the corresponding protuberance of sheet metal are measure-alike, and the protrusion height of described punch is identical with the cup depth of the corresponding depressed part of sheet metal; The depressed part footpath mouth cross sectional shape of die can be got along well, and directly mouthful cross sectional shape is identical for the corresponding protuberance of sheet metal, and the protuberance footpath mouthful cross sectional shape of punch can be got along well, and directly the mouth cross sectional shape is identical for the corresponding depressed part of sheet metal.

Sheet metal adopts gap method moulding, the degree of depth that limits the footpath mouth size in mouthful cross section, sheet metal footpath and depression by described metal sheet molding die is determined the shape in mouthful cross section, sheet metal footpath, and the protrusion shape of described punch and protrusion height can be according to the shape and the footpath mouth size appropriate design in mouthful cross section, the corresponding footpath of sheet metal.

A mouthful cross section, described die depressed part footpath can be contained the corresponding protuberance of sheet metal cross section fully, and a mouthful cross section, preferred die depressed part footpath is a rectangle, can reduce mould like this and add the difficulty in man-hour, reduces the production cost of mould.

Described die depressed part cup depth preferably is slightly larger than the protrusion height of the corresponding protuberance of sheet metal, can avoid sheet metal like this when moulding, the issuable friction of its protuberance and die, the smoothness of reduction metal sheet surface.

When described punch protuberance and sheet metal depressed part shape are identical, shape behind the metal sheet can more adhere to specification, consider the processing cost of mould, can select only to make the end shape of punch protrusion identical with the end shape of the corresponding depressed part of sheet metal.

Beneficial effect: compared with prior art, advantage of the present invention is that processing is simple, die manufacturing cost is low, economical and practical; The inclined-plane of workpiece, curved surface utilize the gap moulding, do not have the friction with mould, smooth mellow and full, the no scar of product surface, elegant in appearance; When mould used, not fragile lathe and mould itself were easy to use in the Installation and Debugging process.

Description of drawings

Fig. 1 is a sheet metal footpath mouthful schematic cross-section;

Fig. 2 is the schematic diagram of the Mould Machining footpath mouthful cross section sheet metal as shown in Figure 1 of employing prior art;

Fig. 3 is for adopting the schematic diagram of Mould Machining provided by the invention footpath mouthful cross section sheet metal as shown in Figure 1;

Structural representation when Fig. 4 is used in combination for the present invention.

The specific embodiment

The present invention is described in further detail below in conjunction with drawings and Examples.

Be illustrated in figure 1 as sheet metal 3 footpath mouthful schematic cross-sections.

Figure 2 shows that the schematic diagram of the Mould Machining footpath mouthful cross section sheet metal 3 as shown in Figure 1 that adopts prior art, this mould comprises die 4 and punch 5, projecting surface shape, the consistent size in the concave face of die 4 and mouthful cross section, sheet metal 3 footpath, concave face shape, the consistent size in the projecting surface of punch 5 and mouthful cross section, sheet metal 3 footpath, when Mould Machining, make the size of die 4 and punch 5 cooperate very accurately, difficulty of processing is big; Simultaneously, when the protrusion position of described sheet metal 3 was the U-loop shape, the processing of mould just more was difficult to guarantee; And mould is easy to break and goes out safety plate or damage mould in the Installation and Debugging process.

Figure 3 shows that the schematic diagram that adopts Mould Machining provided by the invention footpath mouthful cross section sheet metal 3 as shown in Figure 1, comprise die 1 and punch 2.Described die 1 a depressed part directly mouthful cross section is a rectangle, and depressed part footpath mouthful size and sheet metal 3 footpath mouths are measure-alike, and the depressed part cup depth is the protrusion height that the rectangle degree of depth is slightly larger than sheet metal 3 protuberances; The protrusion height of described punch 2 is identical with sheet metal 3 cup depths, and it is only identical with sheet metal 3 concave faces bottom in the end that it protrudes shape.Adopt mould provided by the invention, utilize the gap of mould to pull out the inclined-plane, form desired curved surface by punch 2 and die 1 acting in conjunction.Die 2 is adding man-hour, does not have the processing of curved surface and inclined-plane, has reduced the difficulty of Mould Machining, and punch 2 is adding man-hour, only protrusion height is done precision and limits, and has reduced the difficulty of processing of mould equally.

Mould shown in Figure 3 is than mould shown in Figure 2, at first reduced the difficulty of processing of mould, avoided in the mould Installation and Debugging process loss simultaneously, and reduced the contact-making surface of sheet metal sheet metal and mould in forming process, improved the smoothness of product punch press and mould.

In order to make special-shaped bung as shown in Figure 4, need adopt the combination of mould of the present invention according to the shape of this abnormity bung, shape such as the sheet metal after the moulding has sharp triangle, and is trapezoidal, the compare mould of prior art design of the shape of mould, mechanism is simply a lot.

Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.

Claims

1. metal sheet molding die, comprise die (1) and punch (2), it is characterized in that: the footpath mouth size of the depressed part of described die (1) and the footpath mouth of the corresponding protuberance of sheet metal are measure-alike, and the protrusion height of described punch (2) is identical with the cup depth of the corresponding depressed part of sheet metal.

2. a kind of metal sheet molding die according to claim 1 is characterized in that: a mouthful cross section, described die (1) depressed part footpath is a rectangle.

3. a kind of metal sheet molding die according to claim 1 and 2 is characterized in that: described die (1) depressed part cup depth is greater than the protrusion height of the corresponding protuberance of sheet metal.

4. a kind of metal sheet molding die according to claim 1 is characterized in that: the end shape that described punch (2) protrudes is identical with the end shape of the corresponding depressed part of sheet metal.