Section steel arc pressing die

Abstract

The utility model discloses a profile steel arc pressing die. Comprising a male die and a female die matched with the male die, the male die comprises a connecting flange, a bottom plate and forming assemblies, the connecting flange is arranged at the inner end of the bottom plate, the multiple forming assemblies are arranged on the bottom plate in a radial mode, each forming assembly comprises a rib plate, lug plates, a limiting plate and a first pin shaft, the rib plates are fixedly connected with the bottom plate, the lug plates are fixedly connected to the two sides of the outer ends of the rib plates respectively, and the limiting plates are in an inverted-L shape; the horizontal part of the limiting plate is hinged to the lug plate through a first pin shaft, and a gap is reserved between the vertical part of the limiting plate and the outer end face of the rib plate. The female die comprises a base plate, female die bases and fixing blocks, the female die bases are symmetrically arranged at the two ends of the base plate, and the fixing blocks are arranged on the female die bases. In the press forming process, the limiting plate is tightly attached to the press arc profile steel, unnecessary deformation of the profile steel caused by uneven pressure in the cold pressing process is prevented, flanging in the profile steel press arc process is prevented, and the product quality is improved; the device is suitable for various types of profile steel and is good in universality.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to a steel arc pressing mould. Background Art

[0002] Screening machinery is widely used in the metallurgical mineral processing industry. Screening machinery is a mechanical equipment used to screen various raw materials and primary products according to the particle size of the materials, or to remove moisture, impurities, etc., and then carry out the next step of processing and improve product quality. Arc-pressed steel is one of the indispensable parts in screening machinery, but the arc-pressed steel used in existing screening machinery has a small radius and a short arc length. The arc-pressing equipment for steel on the market is equipment with a large radius and a large arc length, and this type of equipment has poor versatility and a limited scope of application. The existing arc-pressing equipment has unreasonable limit limits, resulting in uneven pressure on the steel during the cold pressing process, resulting in unwanted deformations such as flanging during the arc-pressing process of the steel. The Chinese utility model with the authorization announcement number CN208303673U discloses a slow-pressure arc-shaped plate cold stamping trimming positioning device, which cannot be used for arc pressing of steel. Utility Model Content

[0003] The utility model aims to solve the above technical problems, thereby providing a steel arc pressing die with a wide application range and improving product quality.

[0004] The utility model aims to solve the technical problem, and the technical solution adopted is:

[0005] A steel arc pressing die, comprising a punch and a die matched with the punch, the punch comprising a connecting flange, a bottom plate and a forming assembly, the connecting flange being arranged on the inner end of the bottom plate, a plurality of forming assemblies being arranged radially on the bottom plate, the forming assembly comprising a rib plate, an ear plate, a limit plate and a first pin shaft, the rib plate being fixedly connected to the bottom plate, the two sides of the outer end of the rib plate being fixedly connected with the ear plates respectively, the limit plate being in an inverted L shape, the horizontal portion of the limit plate being hinged to the ear plate through the first pin shaft, and a gap being left between the vertical portion of the limit plate and the outer end surface of the rib plate;

[0006] The die comprises a seat plate, a die seat and a fixing block. The two ends of the seat plate are symmetrically provided with the die seats, and the fixing block is placed on the die seat.

[0007] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0008] During the forming process, the limit plate is in close contact with the arc-pressed steel, preventing the steel from producing unnecessary deformation due to uneven pressure during the cold pressing process, preventing flanging during the arc pressing process of the steel, and improving product quality. It has a wide range of applications and is suitable for various types of steel, with good versatility.

[0009] Further, the optimization scheme of the utility model is:

[0010] The bottom plate is fan-shaped.

[0011] The rib plate is perpendicular to the bottom plate, and the inner end of the rib plate is fixedly connected to the connecting flange.

[0012] A second pin is passed through the ear plate above the horizontal portion of the limiting plate.

[0013] The outer end surfaces of the vertical parts of the limiting plates of the plurality of groups of forming components are located on the same arc.

[0014] The connecting hole between the seat plate and the die seat is a long hole.

[0015] The fixed block is circular and is connected to the die seat via a fixed block shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the male mold of an embodiment of the utility model;

[0017] Figure 2 for Figure 1 AA section view;

[0018] Figure 3 It is a front view of the concave mold of an embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the preparation of the punch arc pressing of the embodiment of the utility model;

[0020] Figure 5 A schematic diagram of a male die contact steel according to an embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of arc forming of the male and female dies in an embodiment of the utility model.

[0022] In the figure: base plate 1; connecting flange 2; rib plate 3; ear plate 4; limit plate 5; first pin shaft 6; second pin shaft 7; seat plate 8; die seat 9; fixed block 10; fixed block shaft 11; positioning plate 12; hydraulic cylinder 13; angle steel 14. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] See also Figure 1-Figure 3 The present embodiment provides a steel arc pressing die, which is composed of a male die and a female die, and the male die cooperates with the female die. The male die is mainly composed of a base plate 1, a connecting flange 2 and three groups of forming components. The inner end of the base plate 1 is vertically welded with a connecting flange 2. The three groups of forming components are placed on the base plate 1 and are radially arranged. The three groups of forming components are respectively a group of middle forming components and two groups of side forming components. The two groups of side forming components are symmetrical to the middle forming components. The number of forming components can be increased according to actual needs. The forming components are mainly composed of a rib plate 3, an ear plate 4, a limit plate 5 and a first pin 6. The rib plate 3 is vertically welded to the base plate 1. The two sides of the outer end of the rib plate 3 are respectively welded with ear plates 4. The plate surface of the ear plate 4 is close to the plate surface of the rib plate 3 and is arranged vertically. The limiting plate 5 is in an inverted L shape, and its horizontal portion is placed above the rib plate 3 and between the two ear plates 4. The outer end of the horizontal portion is hingedly connected to the ear plate 4 through a first pin shaft 6. A gap is left between the inner end surface of the vertical portion of the limiting plate 5 and the outer end surface of the rib plate 3. The gap is used to accommodate and clamp one edge of the steel section to limit the steel section. In this embodiment, the steel section is an angle steel. A second pin shaft 7 is penetrated through the ear plate 4 above the horizontal portion of the limiting plate 5, and the second pin shaft 7 is used to limit the limiting plate 5.

[0026] The die is mainly composed of a seat plate 8, a die seat 9 and a fixed block 10. The seat plate 8 is long and has die seats 9 symmetrically installed at both ends. The connecting holes between the seat plate 8 and the die seat 9 are long holes. The distance between the two die seats 9 can be adjusted through the connecting holes to adapt to different lengths of steel. The fixed block 10 is circular and its outer circumference is a stepped structure. The fixed block 10 is connected to the die seat 9 through a fixed block shaft 11. The two ends of the fixed block shaft 11 are respectively provided with slots. The positioning plate 12 is clamped in the slots. The positioning plate 12 is placed on the outer side of the die seat 9 and connected to it by bolts. When in use, the two ends of the angle steel 14 are placed on the fixed block 10.

[0027] The working process of this embodiment is ( Figure 4-Figure 6As shown): Install the connecting flange 2 of the punch on the piston rod of the hydraulic cylinder 13, the base plate 8 of the die is installed on the frame, and the two ends of the angle steel 14 are respectively placed on the fixed block 10 of the die. Start the hydraulic system, and the piston rod of the hydraulic cylinder 13 drives the punch to extend toward the die. When the punch contacts the angle steel 14, lower the limit plate 5 of the middle forming component to limit the position, pre-press the angle steel 14, lower the limit plate 5 of the side forming component to limit the position, and push the punch until it is formed. During the forming process, the limit plate 5 is in close contact with the arc pressing angle steel 14 to prevent the angle steel 14 from generating unnecessary deformation due to uneven pressure during the cold pressing process.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A steel arc pressing die, comprising a punch and a die matching the punch, characterized in that: The punch comprises a connecting flange, a bottom plate and a forming assembly, wherein the connecting flange is arranged on the inner end of the bottom plate, and a plurality of forming assemblies are radially arranged on the bottom plate, wherein the forming assembly comprises a rib plate, an ear plate, a limit plate and a first pin shaft, wherein the rib plate is fixedly connected to the bottom plate, and the two sides of the outer end of the rib plate are respectively fixedly connected with the ear plates, and the limit plate is in an inverted L shape, wherein the horizontal portion of the limit plate is hingedly connected to the ear plate through the first pin shaft, and a gap is left between the vertical portion of the limit plate and the outer end surface of the rib plate; The die comprises a seat plate, a die seat and a fixing block. The two ends of the seat plate are symmetrically provided with the die seats, and the fixing block is placed on the die seat.

2. The steel arc pressing die according to claim 1, characterized in that: The bottom plate is fan-shaped.

3. The steel arc pressing die according to claim 1, characterized in that: The rib plate is perpendicular to the bottom plate, and the inner end of the rib plate is fixedly connected to the connecting flange.

4. The steel arc pressing die according to claim 1, characterized in that: A second pin is passed through the ear plate above the horizontal portion of the limiting plate.

5. The steel arc pressing die according to claim 1, characterized in that: The outer end surfaces of the vertical parts of the limiting plates of the plurality of groups of forming components are located on the same arc.

6. The steel arc pressing die according to claim 1, characterized in that: The connecting hole between the seat plate and the die seat is a long hole.

7. The steel arc pressing die according to claim 1, characterized in that: The fixed block is circular and is connected to the die seat via a fixed block shaft.

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