阅读说明：本技术 一种挤压半剪式成型凸包的工艺 (Process for extruding half-shear type formed convex hull ) 是由 王�华 庄严 王希亮 杨金健 游健 赵冬 罗健 袁麒麟 于 2020-05-15 设计创作，主要内容包括：本发明公开了一种挤压半剪式成型凸包的工艺,S4、使半成品凸包零件A进入到第二级挤压半剪模的冲压工位内；S5、使第二级挤压半剪模的第二凸模由上往下冲压半成品凸包零件A中凸包与板材的连接部,确保冲压深度为确保冲压深度为4/H,从而加工出半成品凸包零件B；S7、使第三级挤压半剪模的第三凸模由上往下冲压半成品凸包零件B中凸包与板材的连接部,确保冲压深度为确保冲压深度为4/H,从而加工出半成品凸包零件C。本发明的有益效果是：工艺简单、提高凸包零件加工质量、提高加工后凸包零件使用寿命。(The invention discloses a process for extruding a semi-shear type formed convex hull, which comprises the following steps of S4, enabling a semi-finished convex hull part A to enter a stamping station of a second-stage extruding semi-shear die; s5, enabling a second male die of the second-stage extrusion semi-shearing die to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part A from top to bottom, and ensuring that the punching depth is 4/H, so as to process a semi-finished convex hull part B; and S7, enabling a third male die of the third-stage extrusion semi-shearing die to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part B from top to bottom, and ensuring that the punching depth is 4/H, so as to process the semi-finished convex hull part C. The invention has the beneficial effects that: the process is simple, the processing quality of the convex hull part is improved, and the service life of the processed convex hull part is prolonged.)

1. A technology for extruding a half-shear type formed convex hull is characterized in that: it comprises the following steps:

s1, forming a plurality of plates on the strip by using a forming machine, and ensuring that the plates are arranged in sequence along the length direction of the strip;

s2, feeding the strip into an extrusion semi-shearing progressive die, and ensuring that a plate positioned at the head end of the strip is positioned in a stamping station of the first-stage extrusion semi-shearing die (1);

s3, enabling a first male die (2) of the first-stage extrusion semi-shearing die (1) to punch a plate from top to bottom, ensuring that the punching depth is 4/H, and H is the height of the designed convex hull part, so as to machine a semi-finished convex hull part A (3);

s4, continuously pulling the strip material (4) rightwards to enable the semi-finished convex hull part A (3) to enter a stamping station of a second-stage extrusion semi-shearing die (5);

s5, enabling a second male die (6) of the second-stage extrusion semi-shearing die (5) to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part A (3) from top to bottom, and ensuring that the punching depth is 4/H, so as to machine a semi-finished convex hull part B (7);

s6, continuously pulling the strip material (4) rightwards to enable the semi-finished convex hull part B (7) to enter a stamping station of a third-stage extrusion semi-shearing die (8);

s7, enabling a third male die (9) of a third-stage extrusion semi-shearing die (8) to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part B (7) from top to bottom, and ensuring that the punching depth is 4/H, so as to machine a semi-finished convex hull part C (10);

s8, continuously pulling the strip material (4) rightwards to enable the semi-finished convex hull part C (10) to enter a stamping station of a fourth-stage extrusion semi-shearing die (11);

s9, enabling a fourth male die (12) of a fourth-stage extrusion semi-shearing die (11) to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part C (10) from top to bottom, and ensuring that the punching depth is 4/H, so as to machine a finished convex hull part (13) with the convex hull height of H;

s10, the belt material (4) is continuously pulled rightwards, and when the formed finished convex hull part (13) enters a blanking station, the blanking device presses down the finished convex hull part on the belt material (4).

2. The process for extruding a half-scissor formed convex hull as claimed in claim 1, wherein: the outer diameters of the first male die (2), the second male die (6), the third male die (9) and the fourth male die (12) are sequentially decreased progressively.

3. The process for extruding a half-scissor formed convex hull as claimed in claim 1, wherein: the size of the H is 0.3 mm.

4. The process for extruding a half-scissor formed convex hull as claimed in claim 1, wherein: the blanking device is arranged on the right side of the extrusion semi-shearing progressive die.

5. The process for extruding a half-scissor formed convex hull as claimed in claim 1, wherein: the horizontal distance between every two adjacent extrusion half-shearing dies is equal to the horizontal distance between every two adjacent plates on the strip (4).

Technical Field

The invention relates to the technical field of convex hull part processing, in particular to a process for forming a convex hull by extruding a half-shear mode.

Background

At present, with the continuous development of the electronic industry, parts for electronic products are also made smaller and smaller. The convex hull part is the most important component for forming the electronic product, the structure of the convex hull part is shown in figure 1, the vertical distance between the convex hull bottom surface (14) of the convex hull part and the plate top surface (15) is H, and H is called the convex hull height. The processing mode is formed by processing a stamping die, and the convex hull can be formed by stamping a plate on the stamping die in a stamping mode. However, although the convex hull part can be formed by press molding through the press mold, in the actual punching process, the punch pulls the top surface (15) of the plate material towards the punching direction to form the arc-shaped part (16) as shown in fig. 1, and further the bottom surface (14) of the convex hull forms an included angle with the top surface (15) of the plate material, so that the flatness of the convex hull part is reduced, and the processing quality of the convex hull part is reduced. In addition, after the plate is stamped at one time, large stress concentration can be generated between the convex hull and the plate, so that the strength of the convex hull and the plate is reduced, and the service life of a machined convex hull part is shortened. Therefore, a convex hull process for improving the processing quality of convex hull parts and prolonging the service life of the processed convex hull parts is needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the process for extruding the half-shear type formed convex hull, which has the advantages of simple process, improvement of the processing quality of convex hull parts, improvement of the service life of the processed convex hull parts and simplicity in operation.

The purpose of the invention is realized by the following technical scheme: a process for extruding a half-shear type formed convex hull comprises the following steps:

s1, forming a plurality of plates on the strip by using a forming machine, and ensuring that the plates are arranged in sequence along the length direction of the strip;

s2, feeding the strip into an extrusion semi-shearing progressive die, and ensuring that a plate positioned at the head end of the strip is positioned in a stamping station of a first-stage extrusion semi-shearing die;

s3, enabling a first male die of the first-stage extrusion semi-shearing die to punch a plate from top to bottom, ensuring that the punching depth is 4/H, and H is the height of the designed convex hull part, so as to process a semi-finished convex hull part A;

s4, continuously pulling the strip material rightwards to enable the semi-finished convex hull part A to enter a stamping station of a second-stage extrusion semi-shearing die;

s5, enabling a second male die of the second-stage extrusion semi-shearing die to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part A from top to bottom, and ensuring that the punching depth is 4/H, so as to process a semi-finished convex hull part B;

s6, continuously pulling the strip material rightwards to enable the semi-finished convex hull part B to enter a stamping station of a third-stage extrusion semi-shearing die;

s7, enabling a third male die of the third-stage extrusion semi-shearing die to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part B from top to bottom, and ensuring that the punching depth is 4/H, so as to process a semi-finished convex hull part C;

s8, continuously pulling the strip material rightwards to enable the semi-finished convex hull part C to enter a stamping station of a fourth-stage extrusion semi-shearing die;

s9, enabling a fourth male die of the fourth-stage extrusion semi-shearing die to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part C from top to bottom, and ensuring that the punching depth is 4/H, so that a finished convex hull part with the convex hull height of H is processed;

and S10, continuously pulling the strip rightwards, and pressing the finished convex hull parts on the strip by the blanking device when the formed finished convex hull parts enter a blanking station.

The outer diameters of the first male die, the second male die, the third male die and the fourth male die are sequentially decreased progressively.

The size of the H is 0.3 mm.

The blanking device is arranged on the right side of the extrusion semi-shearing progressive die.

The horizontal distance between every two adjacent extrusion half-shearing dies is equal to the horizontal distance between every two adjacent plate parts on the strip.

The invention has the following advantages: the finished convex hull part processed by the method is formed by four convex hulls with fixed diameters, the forming height is 4/H each time, and the stamping pulling force is reduced by one fourth during each forming, so that the top surface of the plate is not pulled downwards to form an arc part, and the top surface of the plate is ensured to be always flat. In addition, because the arc-shaped part (16) is not generated, the stress generated by stamping is reduced, and the service life of the convex hull part after processing is greatly prolonged.

Drawings

FIG. 1 is a schematic view of a convex hull part;

FIG. 2 is a schematic view of the first half shear after the plate has been extruded;

FIG. 3 is a schematic view of the second half shear after the sheet has been extruded;

FIG. 4 is a schematic view of the third half shear after the plate has been extruded;

FIG. 5 is a schematic view of the fourth half shear after the plate has been extruded;

FIG. 6 is a schematic structural view of a semi-shearing extrusion progressive die;

in the figure, 1-a first-stage extrusion semi-shearing die, 2-a first male die, 3-a semi-finished convex hull part A, 4-a strip material, 5-a second-stage extrusion semi-shearing die, 6-a second male die, 7-a semi-finished convex hull part B, 8-a third-stage extrusion semi-shearing die, 9-a third male die, 10-a semi-finished convex hull part C, 11-a fourth-stage extrusion semi-shearing die, 12-a fourth male die, 13-a finished convex hull part, 14-a convex hull bottom surface, 15-a plate top surface and 16-an arc part.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 1 to 6, a process for extruding a half-shear type formed convex hull comprises the following steps:

s1, forming a plurality of plates on the strip by using a forming machine, and ensuring that the plates are arranged in sequence along the length direction of the strip;

s2, feeding the strip into an extrusion semi-shearing progressive die, and ensuring that a plate positioned at the head end of the strip is positioned in a stamping station of the first-stage extrusion semi-shearing die 1;

s3, enabling the first male die 2 of the first-stage extrusion semi-shearing die 1 to punch a plate from top to bottom, ensuring that the punching depth is 4/H, and H is the height of the designed convex hull part, so as to machine a semi-finished convex hull part A3;

s4, continuously pulling the belt material 4 rightwards to enable the semi-finished convex hull part A3 to enter a stamping station of the second-stage extrusion semi-shearing die 5;

s5, enabling a second male die 6 of the second-stage extrusion semi-shearing die 5 to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part A3 from top to bottom, and ensuring that the punching depth is 4/H, so as to machine a semi-finished convex hull part B7;

s6, continuously pulling the belt material 4 rightwards to enable the semi-finished convex hull part B7 to enter a stamping station of a third-stage extrusion semi-shearing die 8;

s7, enabling a third male die 9 of a third-stage extrusion semi-shearing die 8 to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part B7 from top to bottom, and ensuring that the punching depth is 4/H, so that a semi-finished convex hull part C10 is processed;

s8, continuously pulling the strip 4 rightwards to enable the semi-finished convex hull part C10 to enter a stamping station of the fourth-stage extrusion semi-shearing die 11;

s9, enabling a fourth male die 12 of the fourth-stage extrusion semi-shearing die 11 to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part C10 from top to bottom, and ensuring that the punching depth is 4/H, so as to machine a finished convex hull part 13 with the convex hull height of H; because the convex closure is formed through the convex closure with the fixed diameter for four times, and the forming height is 4/H at every time, when the convex closure is formed, the punching pulling force is reduced by one fourth, so that the top surface of the plate can not be pulled downwards to form an arc part, the top surface of the plate is ensured to be flat all the time, and compared with the original convex closure formed at one time, the convex closure processing technology for processing the convex closure has the advantages that the height is H, and the flatness of convex closure parts is greatly improved. In addition, because the arc-shaped part 16 is not generated, the stress generated by stamping is reduced, and the service life of the machined convex hull part is greatly prolonged.

And S10, continuously pulling the strip 4 rightwards, and when the formed finished convex hull parts 13 enter a blanking station, the blanking device presses down the finished convex hull parts on the strip 4.

The outer diameters of the first male die 2, the second male die 6, the third male die 9 and the fourth male die 12 are sequentially decreased progressively. The blanking device is arranged on the right side of the extrusion semi-shearing progressive die. The horizontal distance between each two adjacent extrusion half-shearing dies is equal to the horizontal distance between two adjacent plate members on the strip 4.

If the actually required convex hull height H is 0.3mm, the specific processing technology comprises the following steps:

s1, forming a plurality of plates on the strip by using a forming machine, and ensuring that the plates are arranged in sequence along the length direction of the strip;

s2, feeding the strip into an extrusion semi-shearing progressive die, and ensuring that a plate positioned at the head end of the strip is positioned in a stamping station of the first-stage extrusion semi-shearing die 1;

s3, enabling the first male die 2 of the first-stage extrusion semi-shearing die 1 to punch a plate from top to bottom, ensuring that the punching depth is 0.075mm, and H is the height of the designed convex hull part, and thus processing a semi-finished convex hull part A3;

s4, continuously pulling the belt material 4 rightwards to enable the semi-finished convex hull part A3 to enter a stamping station of the second-stage extrusion semi-shearing die 5;

s5, enabling a second male die 6 of the second-stage extrusion semi-shearing die 5 to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part A3 from top to bottom, and ensuring that the punching depth is 0.075mm, so as to machine a semi-finished convex hull part B7;

s6, continuously pulling the belt material 4 rightwards to enable the semi-finished convex hull part B7 to enter a stamping station of a third-stage extrusion semi-shearing die 8;

s7, enabling a third male die 9 of the third-stage extrusion semi-shearing die 8 to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part B7 from top to bottom, and ensuring that the punching depth is 0.075mm, so that a semi-finished convex hull part C10 is processed;

s8, continuously pulling the strip 4 rightwards to enable the semi-finished convex hull part C10 to enter a stamping station of the fourth-stage extrusion semi-shearing die 11;

s9, enabling the fourth male die 12 of the fourth-stage extrusion semi-shearing die 11 to punch the connecting part of the convex hull and the plate in the semi-finished convex hull part C10 from top to bottom, and ensuring that the punching depth is 0.075mm, so as to machine the finished convex hull part 13 with the convex hull height of H. Because the convex closure has the terrace die shaping of motionless diameter through the quartic, and the shaping height at every turn is 0.075mm, and during the shaping at every turn, the power is dragged in the punching press reduces the fourth to can not drag the top surface of panel downwards and form the arc portion, guaranteed that the top surface of panel is level and smooth all the time, consequently this processing convex closure technology compares original one shot forming out highly be H's convex closure, very big improvement the plane degree of convex closure part.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.