Angle steel processing unit

Abstract

The utility model discloses an angle steel processing unit which comprises an integrally-formed hot extrusion device, a cooling device and a withdrawal and straightening device which are sequentially arranged. The integrally-formed hot extrusion device comprises a charging barrel, a mold frame fixedly arranged at the front end of the charging barrel, an angle steel male mold fixedly arranged in the mold frame, an angle steel female mold support fixedly arranged in the mold frame and fixedly connected with the angle steel male mold, a lubricating piece inserted into the front end in a cavity of the charging barrel, and a blank inserted into the cavity of the charging barrel and attached to the rear end of the lubricating piece. The cushion block is connected in the cavity of the charging barrel in a sliding manner and is positioned behind the blank; and the pushing shaft is connected in the cavity of the charging barrel in a sliding manner and is positioned behind the cushion block. The integrally-formed semi-finished angle steel is reasonable in structure, long in service life and high in practicability, the integrally-formed semi-finished angle steel can be extruded through one-time extrusion, production energy consumption and production cost can be reduced, the integrally-formed semi-finished angle steel is better in overall performance and stress performance, and the service life of the integrally-formed semi-finished angle steel is prolonged. And the production quality of the angle steel can be further improved after the cooled semi-finished angle steel is corrected by the withdrawal and straightening device.

Description

Technical Field

[0001] The utility model relates to a device for producing angle steel, in particular to an angle steel processing machine group. Background Art

[0002] Angle steel is a long strip of steel with two sides perpendicular to each other. It is divided into two types: equal-leg angle steel and unequal-leg angle steel. It is widely used in various building structures and mechanical structures due to its advantages such as high strength, corrosion resistance, plasticity and economy.

[0003] Angle steel is typically manufactured using hot rolling, bending, or welding processes. The hot rolling process involves using a hot rolling mill to plastically deform a steel billet and form it into the desired shape. During the hot rolling process, the billet undergoes multiple cycles of rough and finish rolling, which results in high energy consumption and production costs for angle steel. Furthermore, scale easily forms on the steel surface, which is difficult to remove during subsequent processing, resulting in poor angle steel production quality. The bending process involves directly bending steel plates into angle steel. This lacks a transition arc on the inside of the angle steel, and stresses cross at the angles formed by the bends, resulting in poor stress resistance. The welding process involves welding multiple sections of steel plates into angle steel according to pre-set angle steel dimensions. The weld seams of angle steel often present cracks, pores, slag inclusions, and are weak points, resulting in poor integrity and stress resistance. Summary of the Invention

[0004] In order to solve the above deficiencies in the prior art, the present invention aims to provide an angle steel processing unit to achieve the purpose of reducing production costs and improving production quality.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an angle steel processing unit, comprising an integral hot extrusion device, a cooling device and a straightening device arranged in sequence; the integral hot extrusion device comprises a barrel, a die frame fixed at the front end of the barrel, an angle steel punch fixed in the die frame, an angle steel die support fixed in the die frame and fixedly connected to the angle steel punch, a lubricating plate inserted at the front end of the barrel cavity, a blank inserted in the barrel cavity and fitted with the rear end of the lubricating plate, a pad slidably connected in the barrel cavity and located behind the blank, a push shaft slidably connected in the barrel cavity and located behind the pad, and a driving mechanism fixedly connected to the rear end of the push shaft for driving the push shaft to move linearly in the barrel cavity.

[0006] As a limitation of the present invention, the angle steel punch includes an angle steel punch body, an angle steel forming cavity provided on the angle steel punch body, and at least two angle steel punch positioning holes provided on the angle steel punch body.

[0007] As a further limitation of the present invention, the angle steel forming cavity includes a conical surface inlet, a uniform wall band connected to the conical surface inlet, and a conical surface outlet connected to the uniform wall band.

[0008] As a further limitation of the present invention, the angle steel die support includes an angle steel die support body, an angle steel outlet provided on the angle steel die support body, and at least two angle steel die positioning holes provided on the angle steel die support body. The angle steel die positioning holes and the angle steel punch positioning holes are arranged correspondingly and are fixedly connected together by corresponding positioning pins.

[0009] As another limitation of the present invention, the blank includes a stainless steel blank body with a conical front end and a carbon steel tail pad fixed to the rear end of the stainless steel blank body.

[0010] As a further limitation of the present invention, the diameter of the lubricating sheet is 2 mm to 5 mm smaller than the inner diameter of the barrel.

[0011] As a further limitation of the present invention, the lubricating sheet is made of glass powder material.

[0012] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0013] (1) The utility model is provided with an integrated hot extrusion device, a cooling device and a straightening device, wherein the integrated hot extrusion device can extrude the heated billet into an integrated semi-finished angle steel, the cooling device can cool the semi-finished angle steel to a temperature suitable for straightening, and finally the straightening device is used to straighten and correct the cooled semi-finished angle steel to produce a finished angle steel. In the actual production of angle steel, the utility model can extrude an integrated semi-finished angle steel through a single extrusion, which can reduce production energy consumption and production costs. At the same time, the overall performance and stress-bearing performance of the integrated semi-finished angle steel are better, which can effectively improve the production quality of the angle steel. Moreover, the surface quality and flatness of the cooled semi-finished angle steel can be improved after being corrected by the straightening device, which can further improve the production quality of the angle steel.

[0014] (2) The one-piece hot extrusion device of the present invention is provided with a die frame, an angle steel punch, an angle steel die support, a lubricating sheet, and a pad. The die frame is used to mount the angle steel punch and the angle steel die support, the angle steel punch is used to shape the angle steel, and the angle steel die support is used to withstand the extrusion force, which can effectively improve the rationality and strength of the structure of the present invention. The lubricating sheet plays a lubricating role, facilitating the extrusion of the billet. The provision of the pad can prevent the push shaft from direct contact with the hot billet, thereby preventing damage to the push shaft and effectively improving the service life of the present invention.

[0015] (3) The angle steel forming cavity of the utility model includes a conical inlet, a uniform wall band and a conical outlet, which can facilitate the entry, forming and extrusion of the blank, and can further improve the rationality and practicality of the structure of the utility model.

[0016] (4) The front end of the stainless steel billet body in the present invention is a conical surface, which can reduce the extrusion pressure and facilitate the extrusion of the billet. The carbon steel tail pad is arranged at the rear end of the stainless steel billet body, which can make the entire stainless steel billet body be extruded into angle steel as much as possible, thereby improving the utilization rate of the stainless steel billet body.

[0017] (5) The lubricating sheet in the utility model is made of glass powder material. Glass powder has good lubrication effect, stable chemical properties, small thermal conductivity, and can prevent the surface of the blank from cooling too quickly, which can effectively improve the rationality and practicality of the structure of the utility model.

[0018] In summary, the present invention has a reasonable structure, a long service life, and strong practicality. In actual angle steel production, a one-piece semi-finished angle steel can be extruded in a single extrusion, thereby reducing production energy consumption and production costs. Furthermore, the one-piece semi-finished angle steel has better overall performance and mechanical properties. After the cooled semi-finished angle steel is corrected by the straightening device, the production quality of the angle steel can be further improved. The present invention is suitable for use in angle steel production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic structural diagram of an integrated hot extrusion device in an embodiment of the present utility model;

[0021] Figure 2 This is a front view of the structural relationship of the angle steel punch in the embodiment of the present utility model;

[0022] Figure 3 for Figure 2 AA cross-section of

[0023] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0024] Figure 5 This is a front view of the structural relationship of the angle steel die support in the embodiment of the present utility model;

[0025] Figure 6 for Figure 5 BB cross-section diagram;

[0026] Figure 7 This is a schematic diagram of the connection relationship between the angle steel punch, the angle steel die support and the positioning pin in the embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of the connection relationship between the mold frame, the angle steel punch and the angle steel die support in the embodiment of the present utility model;

[0028] Figure 9 This is a schematic structural diagram of the blank in the embodiment of the utility model;

[0029] Figure 10 This is a schematic diagram of the use state of an embodiment of the utility model;

[0030] Figure 11 This is a schematic structural diagram of the finished angle steel in the embodiment of the present utility model;

[0031] In the figure: 1. Barrel; 2. Mold frame;

[0032] 3. Angle steel punch; 31. Angle steel punch body; 32. Angle steel forming cavity; 33. Angle steel punch positioning hole; 321. Conical inlet; 322. Even wall strip; 323. Conical outlet;

[0033] 4. Angle steel die support; 41. Angle steel die support body; 42. Angle steel outlet; 43. Angle steel die positioning hole;

[0034] 5. Lubricating sheet;

[0035] 6. Billet; 61. Cylindrical stainless steel component; 62. Frustum-shaped stainless steel component; 63. Carbon steel tail pad;

[0036] 7. Spacer; 8. Pusher shaft; 9. Driving mechanism; 10. Semi-finished angle steel; 11. Locating pin; 12. Lifting bolt; 13. Slot. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention and are not intended to limit the present invention.

[0038] Embodiment An angle steel processing unit

[0039] This embodiment includes an integrally formed hot extrusion device, a cooling device, and a straightening device, which are sequentially arranged. The integrally formed hot extrusion device is used to extrude the heated billet 6 into a semi-finished angle steel 10, which may have slight bends and twists. The cooling device is an existing device, which is used to cool the hot semi-finished angle steel 10 to a temperature suitable for straightening. The straightening device is an existing device, which is used to straighten the cooled semi-finished angle steel to correct any bends and twists in the semi-finished angle steel 10. The surface quality and flatness of the semi-finished angle steel straightened by the straightening device are significantly improved, ultimately producing a high-precision, high-quality finished angle steel.

[0040] like Figure 1 The one-piece hot extrusion device shown includes a barrel 1, a mold frame 2 fixed to the front end of the barrel 1, an angle steel punch 3 fixed in the mold frame 2, an angle steel die support 4 fixed in the mold frame 2 and fixedly connected to the angle steel punch 3, a lubricating plate 5 inserted in the front end of the barrel 1 cavity, a blank 6 inserted in the barrel 1 cavity and abutting the rear end of the lubricating plate 5, a pad 7 slidingly connected in the barrel 1 cavity and located behind the blank 6, a push shaft 8 slidingly connected in the barrel 1 cavity and located behind the pad 7, and a drive mechanism 9 fixedly connected to the rear end of the push shaft 8 for driving the push shaft 8 to move linearly in the barrel 1 cavity. The barrel 1 is a cylindrical structure with a circular cavity. The lubricating plate 5 is made of glass powder material. The diameter of the lubricating plate 5 is 2mm-5mm smaller than the size of the circular cavity in the barrel 1. The drive mechanism 9 uses a hydraulic press, and the power output end of the hydraulic press is fixedly connected to the rear end of the push shaft 8.

[0041] like Figure 2-4 As shown, the angle steel punch 3 includes an angle steel punch body 31, an angle steel forming cavity 32 provided on the angle steel punch body 31, and at least two angle steel punch positioning holes 33 provided on the angle steel punch body 31. Specifically, in this embodiment, two angle steel punch positioning holes 33 are provided at symmetrical positions on the angle steel punch body 31. The angle steel punch body 31 includes a cylindrical member, a first conical member fixed to the left end of the cylindrical member, and a second conical member fixed to the right end of the cylindrical member. The cylindrical member, the first conical member, and the second conical member are integrally formed, wherein the cone angle A of the first conical member is 140±0.5°, the cone angle B of the second conical member is 24±0.5°, and the length L1 of the cylindrical member is 10.5mm to 15.5mm. The angle steel forming cavity 32 includes a conical inlet 321, a uniform wall band 322 connected to the conical inlet 321, and a conical outlet 323 connected to the uniform wall band 322, wherein the conical angle C of the conical inlet 321 is 120°, and the length L2 of the uniform wall band 322 is 11mm~16mm.

[0042] like Figure 5-7 As shown, the angle steel die support 4 includes an angle steel die support body 41, an angle steel outlet 42 provided on the angle steel die support body 41, and at least two angle steel die positioning holes 43 provided on the angle steel die support body 41. The angle steel die positioning holes 43 are correspondingly arranged with the angle steel punch positioning holes 33 and are fixed together by corresponding positioning pins 11, wherein the angle steel outlet 42 has the same shape as the angle steel forming cavity 32, and the size of the angle steel outlet 42 is slightly larger than the size of the angle steel forming cavity 32. The cone angle D on the right side of the angle steel die support body 41 is the same as the cone angle A, and the cone surface on the right side of the angle steel die support body 41 fits with the cone surface on the left side of the first cone component in the angle steel punch body 31.

[0043] like Figure 8 As shown, the formwork 2 includes a formwork body, a hanging bolt 12 fixed to the formwork body, and a slot 13 defined in the formwork body. The formwork body is provided with a mounting cavity for mounting the angle steel die support 4 and the angle steel punch 3. The shape of the mounting cavity matches the shapes of the angle steel die support 4 and the angle steel punch 3, allowing them to be securely mounted within the mounting cavity. The cone angle E on the right side of the mounting cavity is 24±0.5°. The hanging bolt 12 facilitates the removal and installation of the formwork 2. The slot 13 matches the block on the mounting base at the installation site, allowing the formwork 2 to be securely mounted there.

[0044] like Figure 9 As shown, the blank 6 comprises a stainless steel blank body with a conical front end and a carbon steel tail washer 63 fixed to the rear end of the stainless steel blank body. The stainless steel blank body is made of 304 stainless steel and includes a cylindrical stainless steel member 61 and a conical stainless steel member 62 fixed to the front end of the cylindrical stainless steel member 61. The conical stainless steel member 62 has a taper angle F of 105±0.5°.

[0045] When using this embodiment, if Figure 10 As shown, the blank 6 is heated to 1100℃-1200℃ and placed in the barrel 1, the driving mechanism 9 is turned on so that the power output end of the driving mechanism 9 pushes the pushing shaft 8 to extrude the blank 6. Under the action of the lubricating sheet 5, the blank 6 can be more smoothly extruded from the angle steel forming cavity 32 in the angle steel punch 3 and form a semi-finished angle steel 10. The semi-finished angle steel 10 is output from the angle steel outlet 42 in the angle steel die support 4, and then the cooling device cools the semi-finished angle steel 10 to 10℃-50℃. Thereafter, the semi-finished angle steel 10 cooled to 10℃-50℃ is placed in the straightening device for straightening until a finished angle steel that meets the production standards is formed. The finished angle steel is as shown in FIG. Figure 11 shown.

[0046] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An angle steel processing unit, characterized by: It includes an integrated hot extrusion device, a cooling device and a straightening device arranged in sequence; the integrated hot extrusion device includes a barrel, a die frame fixed at the front end of the barrel, an angle steel punch fixed in the die frame, an angle steel die support fixed in the die frame and fixedly connected to the angle steel punch, a lubricating plate inserted at the front end of the barrel cavity, a blank inserted in the barrel cavity and fitted with the rear end of the lubricating plate, a pad slidably connected in the barrel cavity and located behind the blank, a push shaft slidably connected in the barrel cavity and located behind the pad, and a driving mechanism fixedly connected to the rear end of the push shaft for driving the push shaft to move linearly in the barrel cavity.

2. The angle steel processing unit according to claim 1, characterized in that: The angle steel punch comprises an angle steel punch body, an angle steel forming cavity provided on the angle steel punch body, and at least two angle steel punch positioning holes provided on the angle steel punch body.

3. The angle steel processing unit according to claim 2, characterized in that: The angle steel forming cavity comprises a conical surface inlet, a uniform wall band connected to the conical surface inlet, and a conical surface outlet connected to the uniform wall band.

4. The angle steel processing unit according to claim 3, characterized in that: The angle steel die support includes an angle steel die support body, an angle steel outlet provided on the angle steel die support body, and at least two angle steel die positioning holes provided on the angle steel die support body. The angle steel die positioning holes are correspondingly arranged with the angle steel punch positioning holes and are fixedly connected together by corresponding positioning pins.

5. The angle steel processing unit according to any one of claims 1 to 4, characterized in that: The blank comprises a stainless steel blank body with a conical front end and a carbon steel tail pad fixedly arranged at the rear end of the stainless steel blank body.

6. The angle steel processing unit according to claim 5, characterized in that: The diameter of the lubricating sheet is 2mm-5mm smaller than the inner diameter of the barrel.

7. The angle steel processing unit according to claim 5, characterized in that: The lubricating sheet is made of glass powder material.

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