Die for forming plate into special-shaped pipe

Abstract

A die for forming a special-shaped pipe from a plate comprises a base, a workpiece table is installed on the base, rotating die bases are fixedly installed on the left side and the right side of the workpiece table, rotating dies are installed in the rotating die bases in a ball joint mode, the rotating dies are guided and limited through guide blocks, the rotating die acting faces of the rotating dies make contact with the side face of the plate, and power heads are machined at the front end and the rear end of each rotating die. A pressing plate is installed on the upper pressing block and matched with the power head. During working, the pressing plate is downward, the extrusion surface is in contact with the steering surface, so that the rotating die rotates around the spherical surface, and the steering surface extrudes the side surface of a plate to rotate towards the middle until the plate is formed. According to the device, through a spherical surface rotation mode, the steering surface of the rotary mold drives the side surface to rotate and deform, when a plate is formed, the steering surface and the side surface do not generate relative displacement, the phenomena of drawing marks, scratches and the like on the surface of the plate during forming are avoided, and meanwhile, the forming mode can prevent the plate from rebounding.

Description

Technical Field

[0001] The invention relates to a die for forming a special-shaped tube from a plate. Background Art

[0002] As people's living standards improve, cars are used more and more widely as a means of transportation. As consumers' consumption concepts improve, their requirements for cars are getting higher and higher. Almost all existing off-road vehicles have pedals. The production and manufacturing requirements of the connecting parts (pedal arms) between the pedals and the car body are relatively high. Since the pedal arm is a special-shaped, variable-diameter square tube, it is usually impossible to form it using standard square tube processing. The existing processing technology also forms the plate. When the plate is formed, the flat-push stamping will cause damage to the surface of the pedal arm, which directly affects the subsequent polishing and surface spraying processes. Summary of the invention

[0003] In view of the shortcomings existing in the above problems, the present invention provides a mold for forming a special-shaped tube from a plate.

[0004] To achieve the above-mentioned purpose, the present invention provides a mold for forming a sheet into a special-shaped tube, comprising a base, a workpiece table is installed on the base, a rotary mold seat is fixedly installed on the left and right sides of the workpiece table, a rotary mold is installed in the rotary mold seat by means of a ball joint, the rotary mold is guided and limited by a guide block, the rotary mold action surface of the rotary mold contacts the side of the sheet, the front and rear end of the rotary mold are processed by a power head, and a pressure plate is installed on the upper pressure block to match the power head.

[0005] As a further improvement of the present invention, a spherical surface is processed on the inner side of the rotary mold seat, and a guide groove is processed on the spherical surface.

[0006] As a further improvement of the present invention, a rotating surface matching the spherical surface is processed on one side of the rotary mold, and a guide block is processed on the rotating surface, and the guide block is located in the guide groove.

[0007] As a further improvement of the present invention, the approach side of the power head is a steering surface.

[0008] As a further improvement of the present invention, extrusion surfaces are processed on the left and right sides of the lower side of the pressing plate, and the extrusion surfaces match the steering surfaces.

[0009] The beneficial effects of the present invention are:

[0010] The device rotates spherically, and the steering surface of the rotating mold drives the side surface to rotate and deform. When the sheet is formed, the steering surface and the side surface do not have relative displacement. During forming, no marks or scratches will be generated on the surface of the sheet. At the same time, this forming method can prevent the sheet from rebounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of a mold for forming a special-shaped tube from a plate according to the present invention;

[0012] Figure 2 It is a side view of a mold for forming a special-shaped tube from a plate according to the present invention;

[0013] Figure 3 It is a working schematic diagram of a mold for forming a special-shaped tube from a plate according to the present invention;

[0014] Figure 4 is a cross-sectional view of a sheet (unformed);

[0015] Figure 5 This is a cross-sectional view of the sheet (after forming).

[0016] In the figure: 1, base; 2, rotary die seat; 21, guide groove; 22, spherical surface; 3, rotary die; 31, guide block; 32, power head; 321, steering surface; 33, rotary die action surface; 4, plate; 41, side; 5, pressure plate; 51, extrusion surface; 6, upper pressure block; 7, workpiece table. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, a die for forming a special-shaped tube from a sheet material according to the present invention comprises a base 1, a workpiece table 7 is installed on the base 1, a rotary die seat 2 is fixedly installed on the left and right sides of the workpiece table 7, a rotary die 3 is installed in the rotary die seat 2 by means of a ball joint, the rotary die 3 is guided and limited by a guide block 31, a rotary die action surface 33 of the rotary die 3 contacts the side surface 41 of the sheet material 4, a power head 32 is processed at the front and rear ends of the rotary die 3, and the side close to the power head 32 is a steering surface 321. A spherical surface 22 is processed on the inner side of the rotary die seat 2, a guide groove 21 is processed at the spherical surface 22, a rotating surface matching the spherical surface 22 is processed on one side of the rotary die 3, a guide block 31 is processed at the rotating surface, and the guide block 31 is located in the guide groove 21. An upper pressing block 6 is provided, a pressing plate 5 is installed on the upper pressing block 6 to match the power head 32, and extrusion surfaces 51 are processed on the left and right sides of the lower side of the pressing plate 5, and the extrusion surfaces 51 match the steering surface 321.

[0018] The device rotates spherically, and the steering surface of the rotating mold drives the side surface to rotate and deform. When the sheet is formed, the steering surface and the side surface do not have relative displacement, and no pull marks or scratches will be generated on the surface of the sheet during forming. Since the forming of the sheet is achieved by spherical rotation, this forming method can prevent the sheet from rebounding.

[0019] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings during specific use;

[0020] like Figure 4-5 It is a schematic diagram of a plate before and after forming. The plate is formed by the device of the present invention while ensuring no springback and surface quality of the product.

[0021] During operation, the processed sheet is prevented from falling onto the workbench. The upper pressure block drives the pressure plate downward, and the extrusion surface contacts the steering surface, causing the rotary die to rotate around the spherical surface. The guide block moves in the guide groove to control the forward and backward displacement of the rotary die and the lower limit of the rotary die. The side of the sheet extruded by the steering surface rotates toward the center until it is formed (see Figure 3 ).

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mold for forming a special-shaped tube from a plate, characterized in that: The invention comprises a base (1), a workpiece table (7) is installed on the base (1), a rotary die seat (2) is fixedly installed on the left and right sides of the workpiece table (7), a rotary die (3) is installed in the rotary die seat (2) by means of a ball joint, the rotary die (3) is guided and limited by a guide block (31), a rotary die action surface (33) of the rotary die (3) contacts a side surface (41) of a plate (4), a front and rear end processing power head (32) and an upper pressure block (6) are provided on the upper pressure block (6), and a pressure plate (5) is installed on the upper pressure block (6) to match the power head (32).

2. The mold for forming a special-shaped tube from a plate according to claim 1, characterized in that: A spherical surface (22) is processed on the inner side of the rotary mold seat (2), and a guide groove (21) is processed on the spherical surface (22).

3. The mold for forming a special-shaped tube from a plate according to claim 1, characterized in that: A rotating surface matching the spherical surface (22) is processed on one side of the rotating mold (3), and a guide block (31) is processed on the rotating surface. The guide block (31) is located in the guide groove (21).

4. The die for forming a special-shaped tube from a plate according to claim 1, characterized in that: The approach side of the power head (32) is a steering surface (321).

5. The die for forming a special-shaped tube from a plate according to claim 1, characterized in that: Extrusion surfaces (51) are processed on the left and right sides of the lower side of the pressing plate (5), and the extrusion surfaces (51) match the steering surfaces (321).

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