CN101049620A - C shaped bending method for hardware pieces of door window made from plastic - steel - Google Patents

Abstract

A method for bending the C-shaped hardware used for plastics-steed door or window frame includes such steps as feeding a steel band in a continuous shaping machine, making 4 V-shaped impressions to form the first and the second bending lines and bending along said two bending lines.

Description

The bending method of C shape part in the plastic-steel door and window handware

Technical field

The present invention relates to a kind of manufacture method of plastic-steel door and window handware, especially in the plastic-steel door and window handware, be used for the bending method of the C shape part of its corner.

Background technology

C shape part is a kind of vitals that is used for corner in plastic-steel door and window handware system, and it is made by the thick raw band steel of 0.4-1.0 millimeter usually, and section is a C shape, is bent into 90 °.Because each handware that adopts in the plastic-steel door and window needs all to guarantee that plastic-steel door and window is firm and machine driving is reliable, though little as the C shape part volume of its vitals, require to guarantee higher processing precision too.Usually the method that adopts for the bending of C shape part is at present: the band steel is continuous cold roll forming in continuous forming machine directly, thereby the bending size is often inaccurate, but also crackle is easily arranged, and causes machining accuracy low, and working (machining) efficiency is also low.

Summary of the invention

The present invention promptly is at the bending method of C shape part in a kind of plastic-steel door and window handware of above-mentioned shortcoming proposition of the prior art, utilizes this method to carry out the bending of C shape part, has higher processing precision and quality.

The present invention realizes by following technical proposals:

The bending method of C shape part in a kind of plastic-steel door and window handware after the band steel is sent into continuous forming machine, comprises the steps:

(a) carry out four V-type groove impressions according to C shape part hem dimensions on the band steel, the center line of described four V-type groove impressions forms two first folding lines and two second folding lines respectively;

(b) respectively on first folding line and second folding line ecto-entad carry out continuous bending, form C shape section.

Compared with prior art, C shape part bending method proposed by the invention can guarantee that the C shape part of processing is bent into 90 °, the machining accuracy height; This method realizes simple, suits to finish process on tinuous production, and efficient is higher.

Description of drawings

Fig. 1 is the bending and forming process schematic diagram of C shape part in the plastic-steel door and window handware of the present invention.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is further detailed.

With reference to the bending and forming process schematic diagram of 90 ℃ of shape parts shown in Figure 1, it is described to be specially following step:

At first: sending into four V-type grooves of extrusion on the band steel of continuous forming machine;

Then: carry out continuous bending several times;

Finally: on the above-mentioned first folding line A, the second folding line B, be bent into 90 ° and will be with steel to be shaped to C shape section simultaneously.

It is pointed out that when being with steel to be bent into C shape part in another embodiment, also can at first carry out the groove impression of other shapes, but location dimension is more accurate when the V-type groove impression that present embodiment proposed makes flanging according to hem dimensions.

Need to prove that the angle of the continuous flanging number of times of the bending and forming process of 90 ℃ of shape parts and each flanging is to calculate according to the actual needs that adds man-hour in the actual application.

This method is applicable in the continuous forming machine and operates, and has improved operating efficiency effectively.

Claims (1)

1, the bending method of C shape part in a kind of plastic-steel door and window handware after the band steel is sent into continuous forming machine, comprises the steps:

(a) carry out four V-type groove impressions according to C shape part hem dimensions on the band steel, the center line of described four V-type groove impressions forms two first folding lines and two second folding lines;

(b) respectively on first folding line and second folding line ecto-entad carry out continuous bending, form C shape section.

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