A preparation method of a stamping bracket

Abstract

The present invention provides a preparation method for a stamping bracket. The stamping bracket has a flat plate section and a first bending section, and the side end of the first bending section has a stepped surface facing the same direction as the upper surface of the flat plate section. The preparation method for the stamping bracket includes the following steps: A1, separately stamp a formed side surface on a flat plate blank; A2, continue to stamp the flat plate section and the side end pattern of the first bending section on the flat plate blank on the basis of having the formed side surface; A3, bend the flat plate blank to obtain the first bending section, and the formed side surface is flipped to form the stepped surface of the first bending section; A4, punch and cut to obtain the stamping bracket with the flat plate section and the first bending section. The stamping bracket prepared by using this method has a high qualification rate.

Description

Technical Field

[0001] The invention relates to the field of stamping technology, and in particular to a method for preparing a stamping bracket. Background Art

[0002] Stamping by stamping die is one of the common processes for producing brackets. Figure 2 The stamping bracket 1 shown has a flat section 2 and a first bending section 4, and the side end of the first bending section 4 has a step surface 5 facing the same direction as the upper surface 3 of the flat section 2; the upper surface 3 of the flat section 2 is used as a reference surface, and after the stamping production is completed, the step surface 5 of the first bending section 4 needs to be lower than the upper surface 3 of the flat section 2, and the height difference needs to be maintained at a size of 0.2±0.1mm. In the prior art, when the stamping bracket 1 is prepared by stamping, the entire plane figure is stamped out at one time by a mold, and then bent into shape. In this way, although the process is simple and efficient, after the product is bent and formed, the height difference between the step surface 5 of the first bending section 4 and the upper surface 3 of the flat section 2 is difficult to meet the requirements, resulting in a poor product qualification rate. Summary of the invention

[0003] Therefore, in order to solve the above problems, the present invention provides a method for preparing a stamping bracket.

[0004] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0005] A method for preparing a stamped bracket, the stamped bracket having a flat section and a first bent section, the side end of the first bent section having a step surface facing the same direction as the upper surface of the flat section; the method for preparing the stamped bracket comprises the following steps:

[0006] A1, a molded side is punched out separately on a flat sheet;

[0007] A2, on the basis of the formed side surface, continue to punch out the side end graphics of the flat plate section and the first bending section on the flat plate;

[0008] A3, bending the flat sheet to obtain a first bending section, and the formed side surface is turned over to form a step surface of the first bending section;

[0009] A4, punching to obtain a stamped bracket having a flat plate section and a first bent section.

[0010] Furthermore, in step A1, a square opening is punched out separately on the flat sheet, and the square opening has the molded side surface.

[0011] Further, the side end of the flat plate section also has a second bending section that is not connected to the first bending section. Between step A2 and step A3, the following steps are further included: A2-1, stamping the side end pattern of the flat plate section to obtain the planar pattern of the second bending section; A2-2, bending the planar pattern of the second bending section to obtain the second bending section.

[0012] Further, before step A1, positioning holes are stamped at the side end of the planar blank. Before step A3, the side end of the planar blank with positioning holes is cut off.

[0013] Through the technical solution provided by the present invention, the following beneficial effects are achieved:

[0014] For the stepped surface formed after bending, during stamping, it is stamped separately; then, the side end patterns of the flat plate section and the first bending section are stamped. By using two stamping operations, the position of the second stamping can be adjusted, so that after bending and forming, the height difference between the stepped surface of the first bending section and the upper surface of the flat plate section meets the specified dimensions, thus greatly improving the qualified rate of product production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a flowchart of the preparation method of the stamping bracket in the embodiment;

[0016] Figure 2 Shown is a structural schematic diagram of the stamping bracket;

[0017] Figure 3 Shown is a schematic diagram of the processing operation of the planar blank in the embodiment;

[0018] Figure 4 Shown is a schematic diagram of the overlapping structure of the punch in steps A1 and A2 in the embodiment;

[0019] Figure 5 Shown is the graphic structure prepared when step A2 is completed in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To further illustrate the embodiments, the present invention provides drawings. These drawings are a part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0021] Now, the present invention will be further described in conjunction with the drawings and specific embodiments.

[0022] This embodiment provides a preparation method of a stamping bracket. The stamping bracket 1 is asFigure 2 As shown, it has a flat plate section 2 and a first bending section 4, and a stepped surface 5 with the same orientation as the upper surface 3 of the flat plate section 2 is provided at the side end of the first bending section 4. Refer to Figure 1 , Figure 3 As shown, the preparation method of the stamping bracket 1 includes the following steps:

[0023] A1. A formed side surface 111 is separately stamped out on the flat plate blank 100.

[0024] In this step, a pattern with a formed side surface 111 is punched out by a separate punch. Specifically, in this embodiment, a square through-hole 11 with the formed side surface 111 is separately punched out on the flat plate blank 100 by a square first punch 21; that is, the formed side surface 111 is one of the side wall surfaces of the square through-hole 11. The square through-hole 11 is easy to blank and has little deformation, which can ensure the accuracy of the formed side surface 111. As shown in the first working area 101 in Figure 3 .

[0025] A2. On the basis of having the formed side surface 111, the side end patterns 12 of the flat plate section 2 and the first bending section 4 are further stamped out on the flat plate blank 100, and the patterns are as shown in the first working area 101 in Figure 3 and Figure 5 .

[0026] Specifically, the formed side surface 111 is a part of the side end pattern of the first bending section 4. In this step A2, other outer shapes except the formed side surface 111 are cut out on the basis of step A1.

[0027] A3. The flat plate blank 100 is bent to obtain the first bending section 4, and the formed side surface 111 is flipped to form the stepped surface 5 of the first bending section 4. The flat plate section 2 does not need to be bent. In this way, the product can be obtained on the flat plate blank 100. At this time, the flat plate section 2 of the product is still connected to the plate of the flat plate blank 100.

[0028] A4. The stamping bracket 1 with a flat plate section 2 and a first bending section 3 is obtained by punching. That is, the product is cut off from the flat plate blank 100 to obtain a complete stamping bracket 1.

[0029] For the stepped surface 5 formed after bending in the stamping bracket 1 prepared by the method provided by this application, during stamping, it is separately stamped (i.e., step A1); then the side end patterns of the flat plate section and the first bending section are stamped out (i.e., step A2); by using two stampings, the position of the second stamping can be adjusted. As shown in Figure 4 , the dotted line is the square first punch 21 used in step A1; the solid line is the second punch 22 used in step A2; through the sequential cooperation of the first punch 21 and the second punch 22, the one as shown inFigure 5 The structure shown. That is, by adjusting the stamping position in step A2, after bending and forming, the height difference between the stepped surface 5 of the first bending section 4 and the upper surface 3 of the flat section 2 meets the specified dimensions, thus greatly improving the qualified rate of product production.

[0030] Specifically, as Figure 2 In the stamping bracket 1 shown, the side end of the flat section 2 further has a second bending section 6 that is not connected to the first bending section 4; specifically, the second bending section 6 also has a through hole 7. Therefore, in order to ensure that the preparation of the second bending section 6 (such as punching and bending operations) does not affect the dimensional accuracy between the stepped surface 5 of the first bending section 4 and the upper surface 3 of the flat section 2; the preparation of the second bending section 6 is moved to after step A2, specifically between step A2 and step A3.

[0031] Among them, the side end pattern of the flat section 2 obtained in step A2 already includes the outer shape of the second bending section 6. Between step A2 and step A3, it further includes: A2-1, stamping the side end pattern of the flat section 2 (specifically, punching), to obtain the planar pattern of the second bending section 6, that is, the planar pattern of the second bending section 6 with the through hole 7. A2-2, bending the planar pattern of the second bending section 6 to obtain the second bending section 6. In this way, the blanking steps can be minimized without affecting the dimensional accuracy between the stepped surface 5 of the first bending section 4 and the upper surface 3 of the flat section 2, and the step design is reasonable.

[0032] Of course, in other embodiments, if Figure 2 the stamping bracket shown does not have the structure of the second bending section 6, the operations of step A2-1 and step A2-2 may not be required either.

[0033] Furthermore, in this embodiment, before step A1, a positioning hole 14 is also stamped at the side end of the flat stock plate 100. The setting of this positioning hole 14 can make the transmission of the flat stock plate 100 in the punching die more accurate; prevent misalignment when the flat stock plate 100 moves. At the same time, this positioning hole 14 remains until before the bending operation of the first bending section 4, that is, before step A3, the side end of the flat stock plate 100 with the positioning hole 14 is cut off (as shown in the structure of the seventh operation area 107 below). The structure design is ingenious and reasonable. Of course, in other embodiments, it is not limited to this.

[0034] Specifically, as Figure 3As shown, in the present application, the blanking die has eight working stations, and each working station performs a stamping operation on the flat stock plate 100 once. These eight stations respectively correspond to eight working areas of the flat stock plate 100, and these eight working areas are respectively the first working area 101, the second working area 102, the third working area 103, the fourth working area 104, the fifth working area 105, the sixth working area 106, the seventh working area 107, and the eighth working area 108. The pattern of the first working area 101 is obtained in step A1; the pattern of the second working area 102 is obtained in step A2; the pattern of the fourth working area 104 is obtained in step A2-1; the pattern of the sixth working area 106 is obtained in step A2-2; the pattern of the eighth working area 108 is obtained in step A3; as for step A4, it can be operated at another station after the eighth station, or it can be operated together with the bending operation at the eighth station. However, bending needs to be carried out first and then blanking. The structural design is reasonable.

[0035] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them fall within the protection scope of the present invention.

Claims

1. A preparation method of a stamping bracket, the stamping bracket has a flat plate section and a first bending section, and a stepped surface with the same orientation as the upper surface of the flat plate section is arranged at the side end of the first bending section; it is characterized in that: The preparation method of the stamping bracket comprises the following steps: A1. Individually stamp a formed side surface on a flat sheet metal blank; A2. On the basis of having the formed side surface, continue to stamp the side-end pattern of the flat plate section and the first bending section on the flat sheet metal blank; A3. Bend the flat sheet metal blank to obtain the first bending section, and the formed side surface is flipped to form the stepped surface of the first bending section; A4. Punch and cut to obtain the stamping bracket with a flat plate section and a first bending section; In step A1, a square through-hole is individually stamped on the flat sheet metal blank, and the formed side surface is provided on the square through-hole; The formed side surface is one of the side wall surfaces of the square through-hole; The formed side surface is a part of the side-end pattern belonging to the first bending section. In this step A2, other outer shapes except the formed side surface are cut out on the basis of step A1.

2. The preparation method of the stamping bracket according to claim 1, characterized in that: The side end of the flat plate section further has a second bending section not connected to the first bending section. Between step A2 and step A3, it further includes: A2-1. Stamp and process the side-end pattern of the flat plate section to obtain the planar pattern of the second bending section; A2-2. Bend the planar pattern of the second bending section to obtain the second bending section.

3. The preparation method of the stamping bracket according to claim 1 or 2, characterized in that: Before step A1, positioning holes are also stamped at the side end of the flat sheet metal blank, and the side end of the flat sheet metal blank with positioning holes is cut off before step A3.

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