Stainless steel profile extrusion forming composite die

Abstract

The utility model discloses a stainless steel profile extrusion forming composite die, which relates to the technical field of profile processing, and adopts the following scheme that the stainless steel profile extrusion forming composite die comprises a die holder and a die mechanism outside the die holder, the die mechanism comprises a die tail support, a die middle support, the die holder, a die support, an extrusion die, an extrusion cylinder, a solid extrusion pad and a hollow extrusion rod, an extrusion die is installed above the die holder, a die support is sequentially arranged behind the extrusion die, a die middle support is arranged behind the die support, a die tail support is arranged behind the die middle support, an extrusion cylinder is arranged on the right side of the die holder, and a solid extrusion pad is arranged in the extrusion cylinder. The die has the advantages of being convenient to replace and flexible to operate, the extrusion forming process is improved, multiple products are produced through one-pass extrusion deformation, demolding after extrusion is facilitated, the die material utilization rate is increased, the production efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of profile processing, in particular to a composite die for extrusion forming of stainless steel profiles. Background Art

[0002] Steel sections are generally formed by hot rolling, welding and hot extrusion. The hot rolling process is suitable for mass production of carbon steel sections. For small batches of stainless steel orders, the hot rolling process requires large molds and is costly. At the same time, stainless steel has high resistance to deformation, a narrow hot working temperature range, low dimensional accuracy of hot rolled products, and poor surface quality. When steel sections are produced using the welding process, welds exist, the overall performance is inconsistent, and the corrosion resistance is poor. The extrusion process has the characteristics of three-way compressive stress, which greatly exerts the metal's plastic deformation ability, makes the material structure denser, has high dimensional accuracy, and has flexible production organization. It is very suitable for the production of small batches of high-end products such as stainless steel.

[0003] The existing stainless steel profile extrusion process produces one product at a time, the metal utilization rate of the mold is low, and the production efficiency is low. At the same time, the existing process installs the mold in an internal manner. After extrusion, the steel section is easily stuck in the extrusion mold and is not easy to demold, which seriously restricts the production rhythm. In view of the above problems, a stainless steel profile extrusion forming composite mold is proposed. Utility Model Content

[0004] The utility model aims to provide a composite die for extrusion forming of stainless steel profiles, which solves the problem that the existing stainless steel profile extrusion process in the prior art produces one product at a time, the metal utilization rate of the die is low, the production efficiency is low, and at the same time, the existing process installation method of the die is a built-in method, the steel profile is easily stuck in the extrusion die after extrusion, and it is not easy to demould, which seriously restricts the production rhythm.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite die for extrusion forming of stainless steel profiles, comprising a die base and a die mechanism outside the die base, the die mechanism comprising a die tail support, a die middle support, a die base, a die support, an extrusion die, an extrusion cylinder, a solid extrusion pad and a hollow extrusion rod, an extrusion die is installed above the die base, a die support is arranged behind the extrusion die, a die middle support is arranged behind the die support, a die tail support is arranged behind the die middle support, an extrusion cylinder is arranged on the right side of the die base, a solid extrusion pad is arranged inside the extrusion cylinder, a hollow extrusion rod is arranged on the right side of the solid extrusion pad, and the interior of the hollow extrusion rod is a hollow structure.

[0006] Preferably, a glass lubrication pad is provided on the right side of the extrusion die.

[0007] Preferably, the die-support comprises an inner layer and an outer layer, the outer layer is installed on the outside of the inner layer, the die support and the die-support are provided with diversion holes corresponding to the extrusion die, and the inner layer and the outer layer are assembled in a conical shape.

[0008] Preferably, the angle α between the die base and the extrusion barrel fitting portion is 61° to 63°, the angle β between the die base and the right side of the extrusion die installation position is 130° to 132°, and the angle γ between the die base and the extrusion die installation position is 21° to 23°.

[0009] Preferably, the extrusion die has a truncated cone shape, a surface roughness of no more than 0.8 μm, an axial thickness of 35 to 50 mm, and two to four independent diversion holes with a sizing zone length of 7 mm to 12 mm are evenly distributed inside the extrusion die.

[0010] Preferably, the structural shape of the front end of the extrusion cylinder is arranged corresponding to the structural shape of the die base, the length of the extrusion cylinder is 1500 mm, and the extrusion cylinder has a taper of 1 mm in the length direction.

[0011] Preferably, the solid extrusion pad is a solid cylindrical structure, and the outer diameter of the solid extrusion pad is 3.5 mm smaller than the inner diameter of the extrusion cylinder.

[0012] Preferably, the extrusion die comprises a channel steel cavity, an angle steel cavity and a rail steel cavity, and the extrusion die has three forms in which a channel steel cavity, an angle steel cavity and a rail steel cavity are respectively opened inside.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model optimizes the design of the tooling, has the advantages of easy mold replacement and flexible operation, improves the extrusion forming process, realizes the production of multiple products in one extrusion deformation, facilitates demoulding after extrusion, improves the utilization rate of mold materials, improves production efficiency and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the angle steel-channel steel extrusion die structure in the utility model;

[0017] Figure 3 This is a schematic diagram of the angle steel-rail steel extrusion die structure in the utility model;

[0018] Figure 4 This is a schematic diagram of the angle steel extrusion die structure in the utility model;

[0019] Figure 5 This is a schematic diagram of the mold base structure in the utility model;

[0020] Figure 6 This is a schematic diagram of the assembly structure of the mold tail support-middle mold support-mold base in the utility model;

[0021] In the figure: 1. die tail support; 2. die center support; 21. inner layer of die center support; 22. outer layer of die center support; 3. die base; 4. die support; 5. extrusion die; 51. channel steel cavity; 52. angle steel cavity; 53. rail steel cavity; 6. glass lubrication pad; 7. extrusion cylinder; 8. solid extrusion pad; 9. hollow extrusion rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] like Figure 1 , Figure 5 and Figure 6 As shown, a composite die for extrusion forming of a stainless steel profile is shown in the figure, comprising a die base 3 and a die mechanism outside the die base 3, the die mechanism comprising a die tail support 1, a die middle support 2, a die base 3, a die support 4, an extrusion die 5, an extrusion cylinder 7, a solid extrusion pad 8 and a hollow extrusion rod 9, an extrusion die 5 is installed on the top of the die base 3, a die support 4 is arranged behind the extrusion die 5, a die middle support 2 is arranged behind the die support 4, a die tail support 1 is arranged behind the die middle support 2, an extrusion cylinder 7 is arranged on the right side of the die base 3, a solid extrusion pad 8 is arranged inside the extrusion cylinder 7, a hollow extrusion rod 9 is arranged on the right side of the solid extrusion pad 8, and the hollow extrusion rod 9 has a hollow structure inside.

[0025] A glass lubrication pad 6 is provided on the right side of the extrusion die 5 .

[0026] The die support 2 includes a die support inner layer 21 and a die support outer layer 22. The die support outer layer 22 is installed outside the die support inner layer 21. The die support 4 and the die support 2 are provided with diversion holes corresponding to the extrusion die 5. The die support inner layer 21 and the die support outer layer 22 are assembled in a conical shape.

[0027] The angle α between the die base 3 and the extrusion cylinder 7 at the fitting position is 61°~63°, the angle β between the die base 3 and the right side of the extrusion die 5 installation position is 130°~132°, and the angle γ between the die base 3 and the extrusion die 5 installation position is 21°~23°, so that the extrusion die 5 can be installed into the inside of the die base 3 from the side where the billet metal is extruded. After the profile is extruded, the extrusion die 5 is left on the residual side to facilitate separation from the profile after hot sawing.

[0028] The shape of the extrusion die 5 is a truncated cone, the surface roughness of the extrusion die 5 is not greater than 0.8 μm, the axial thickness of the extrusion die 5 is 35 to 50 mm, and two to four independent diversion holes with a sizing zone length of 7 mm to 12 mm are evenly distributed inside the extrusion die 5. The two to four independent diversion holes are composed of angle steel shapes, channel steel-angle steel shapes, or rail steel-angle steel shapes, which can improve the extrusion production efficiency.

[0029] The front end structural shape of the extrusion cylinder 7 is arranged corresponding to the structural shape of the die base 3. The length of the extrusion cylinder 7 is 1500 mm, and the extrusion cylinder 7 has a taper of 1 mm in the length direction.

[0030] The solid extrusion pad 8 is a solid cylindrical structure, and the outer diameter of the solid extrusion pad 8 is 3.5 mm smaller than the inner diameter of the extrusion cylinder 7 .

[0031] Example 2

[0032] like Figure 2-Figure 4 As shown, this embodiment further illustrates Example 1, the extrusion die 5 includes a channel steel cavity 51, an angle steel cavity 52 and a rail steel cavity 53, and the extrusion die 5 has three forms in which the channel steel cavity 51, the angle steel cavity 52 and the rail steel cavity 53 are respectively opened inside, and the channel steel cavity 51, the angle steel cavity 52 and the rail steel cavity 53 are determined by the shape of the required profile.

[0033] Working principle: According to the type and size of the stainless steel profile to be produced, the corresponding mold and cylindrical blank are processed. First, the corresponding die tail support 1, die middle support 2, die base 3, die support 4, extrusion die 5, extrusion cylinder 7, solid extrusion pad 8 and hollow extrusion rod 9 are installed, and the blank is heated to a high temperature state. Then, the high-temperature blank is coated with glass powder lubricant, and then the high-temperature blank is loaded into the extrusion cylinder 7. Then, the hollow extrusion rod 9 pushes the solid extrusion pad 8 and the high-temperature blank to move in the extrusion direction to the left. After the front end of the high-temperature blank contacts the glass lubrication pad 6 close to the extrusion die 5, the hollow extrusion rod 9 continues to push to the left, and the high-temperature blank is pressed through the solid extrusion pad 8, first causing the high-temperature blank to be upset and deformed, eliminating the gap between the outer circle of the blank and the inner wall of the extrusion cylinder 7, and then the blank metal is extruded into the diversion hole of the extrusion die 5 to become a profile.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite die for extrusion molding of stainless steel profiles, comprising a die base (3) and a die mechanism outside the die base (3), characterized in that: The mold mechanism comprises a die tail support (1), a die middle support (2), a die base (3), a die support (4), an extrusion die (5), an extrusion cylinder (7), a solid extrusion pad (8) and a hollow extrusion rod (9); the extrusion die (5) is installed above the die base (3); the die support (4) is arranged behind the extrusion die (5); the die middle support (2) is arranged behind the die support (4); the die tail support (1) is arranged behind the die middle support (2); the extrusion cylinder (7) is arranged on the right side of the die base (3); the solid extrusion pad (8) is arranged inside the extrusion cylinder (7); the hollow extrusion rod (9) is arranged on the right side of the solid extrusion pad (8); the hollow extrusion rod (9) is hollow in structure.

2. The stainless steel profile extrusion composite die according to claim 1, characterized in that: A glass lubrication pad (6) is arranged on the right side of the extrusion die (5).

3. The stainless steel profile extrusion molding composite die according to claim 1, characterized in that: The die support (2) comprises a die support inner layer (21) and a die support outer layer (22); the die support outer layer (22) is installed outside the die support inner layer (21); the die support (4) and the die support (2) are provided with diversion holes corresponding to the extrusion die (5); the die support inner layer (21) and the die support outer layer (22) are assembled in a conical shape.

4. The stainless steel profile extrusion composite die according to claim 1, characterized in that: The included angle α between the die base (3) and the extrusion cylinder (7) at the fitting position is 61° to 63°, the included angle β between the die base (3) and the right side of the extrusion die (5) installation position is 130° to 132°, and the included angle γ between the die base (3) and the extrusion die (5) installation position is 21° to 23°.

5. The stainless steel profile extrusion composite die according to claim 1, characterized in that: The extrusion die (5) has a truncated cone shape, a surface roughness of no more than 0.8 μm, an axial thickness of 35 to 50 mm, and two to four independent flow diversion holes with a sizing zone length of 7 mm to 12 mm are evenly distributed inside the extrusion die (5).

6. The stainless steel profile extrusion composite die according to claim 1, characterized in that: The front end structural shape of the extrusion cylinder (7) is arranged to correspond to the structural shape of the die base (3); the length of the extrusion cylinder (7) is 1500 mm, and the extrusion cylinder (7) has a taper of 1 mm in the length direction.

7. The stainless steel profile extrusion composite die according to claim 1, characterized in that: The solid extrusion pad (8) is a solid cylindrical structure, and the outer diameter of the solid extrusion pad (8) is 3.5 mm smaller than the inner diameter of the extrusion cylinder (7).

8. The stainless steel profile extrusion composite die according to claim 1, characterized in that: The extrusion die (5) comprises a channel steel cavity (51), an angle steel cavity (52) and a track steel cavity (53). The extrusion die (5) has three forms in which the channel steel cavity (51), the angle steel cavity (52) and the track steel cavity (53) are respectively opened inside.

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