Double-L profile extrusion forming device

Abstract

The utility model discloses a double-L profile extrusion forming device, and relates to the technical field of profile extrusion production. The device comprises an extrusion cylinder, an extrusion shaft, an extrusion die and a straightening cylinder, the extrusion cylinder is a cylindrical part and is fixedly connected with the press, and a blank is arranged in the extrusion cylinder; the extrusion shaft is of a step structure, is fixedly connected with the press, is matched with an inner hole of the extrusion cylinder and is used for extruding a blank; the extrusion die is fixed on the end face of the extrusion cylinder, and an internal cavity of the extrusion die gradually changes from a circle to a double-L shape; the straightening cylinder is a cylindrical part and is fixed on the end face of the extrusion die. According to the utility model, the straightening cylinder is arranged, so that the device can straighten the extruded and formed double-L profile body on line, the large-specification, integral and high-performance double-L profile can be extruded, the straightening cylinder is convenient to open and adjustable in length due to the split and splicable design, and the problems that the profile is inconvenient to take out and the extrusion forming efficiency is low in the existing extrusion forming device are solved. And a double-L sectional material with a relatively long length is difficult to form.

Description

Technical Field

[0001] The utility model belongs to the technical field of profile extrusion production, in particular to a double L profile extrusion molding device. Background Art

[0002] Compared with profiles produced by rolling and die forging, extruded profiles have higher strength. Extrusion tools are relatively easy to replace and can be mass-produced. The use of extrusion to produce complex-shaped products, especially those with large cross-sectional changes, can greatly reduce the amount of mechanical processing, reduce metal loss, and improve the performance of parts and structures.

[0003] At present, my country does not roll double L profiles. Large-sized double L profiles are welded with steel plates. The profiles are not integral structures and cannot meet high performance requirements. The die forging process for large-sized double L profiles is complicated, and the reserved process margin needs to be removed by mechanical processing, resulting in a large processing volume and low metal utilization. At the same time, the length of the double L profile is short. In comparison, the hot extrusion process in a closed extrusion barrel has become an advanced method for producing double L profiles. It can extrude large-sized integral double L profiles. After extrusion, no mechanical processing is required and it can be used directly. The material has high mechanical properties and a long molding length. However, the existing extrusion molding device is inconvenient to remove the profile, and it is difficult to mold a long length double L profile.

[0004] To this end, we provide a double L-profile extrusion molding device to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a double L-profile extrusion molding device. By arranging a straightening cylinder, the device can perform online straightening on the double L-profile body after extrusion molding, and can extrude large-size, integral-shaped, high-performance double L-profiles. The split and spliced ​​design makes the straightening cylinder easy to open and the length adjustable, thus solving the problems of the existing extrusion molding device that it is inconvenient to remove the profile and it is difficult to mold a double L-profile of a longer length.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a double-L profile extrusion forming device, comprising an extrusion cylinder, an extrusion shaft, an extrusion die and a straightening cylinder; the extrusion cylinder is a cylindrical part, fixedly connected to a press, and a blank is arranged inside the extrusion cylinder; the extrusion shaft is a step structure, fixedly connected to a press, and the extrusion shaft cooperates with the inner hole of the extrusion cylinder for extruding the blank; the extrusion die is fixed on the end face of the extrusion cylinder, and its internal cavity gradually changes from a circular shape to a double-L shape; the straightening cylinder is a cylindrical part, fixed on the end face of the extrusion die, and its internal cavity is a double-L shape, so as to perform online straightening on the double-L profile body after extrusion forming.

[0008] The straightening cylinder includes a fixed ring plate, a fixed half cylinder and a movable half cylinder; the fixed ring plate is fixed to the end face of the extrusion die by fasteners, the fixed half cylinder is fixed to the end face of the fixed ring plate by fasteners, the end of the movable half cylinder is slidably matched with the fixed ring plate, and the movable half cylinder is locked with the fixed half cylinder by fasteners.

[0009] The utility model is further configured such that four first mounting holes evenly distributed along the circumference are arranged on the end face of the extrusion die; four second mounting holes evenly distributed along the circumference are arranged on the fixed ring plate, and the second mounting holes match the first mounting holes.

[0010] The utility model is further configured that end support plates are fixed on both end surfaces of the fixed semi-cylinder and the movable semi-cylinder, and the end support plates are provided with fourth mounting holes.

[0011] The utility model is further configured that the fixing ring plate is also provided with a third mounting hole, and the third mounting hole matches the fourth mounting hole.

[0012] The utility model is further configured that side support plates are fixed at the joints on the upper and lower sides of the fixed semi-cylinder and the movable semi-cylinder, and the side support plates are provided with fifth mounting holes.

[0013] The utility model is further configured that a sliding block is fixed on the end surface of the movable semi-cylinder close to the fixed ring plate, the sliding block is slidably matched with a sliding groove, and the sliding groove is arranged on the fixed ring plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model provides a straightening cylinder so that the device can perform online straightening on the double L-profile body after extrusion, and can extrude large-size, integral, high-performance double L-profiles. By providing a fixed semi-cylinder, a movable semi-cylinder, a side support plate and a fifth mounting hole, the split design makes it easy to open the straightening cylinder, thereby facilitating the removal of the double L-profile body from the straightening cylinder.

[0016] 2. The utility model provides an end support plate and a fourth mounting hole, so that the length of the straightening tube can be adjusted, and can be spliced ​​into a required length based on actual needs, thereby being able to extrude a double L profile with a longer length.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structural appearance of a double L-profile extrusion molding device.

[0020] Figure 2 This is a diagram of the internal structure of an extrusion barrel in a double L-profile extrusion molding device.

[0021] Figure 3 for Figure 2 Partial structure diagram of .

[0022] Figure 4 A structural diagram of a straightening cylinder for a double L-profile extrusion molding device Figure 1 .

[0023] Figure 5 A structural diagram of a straightening cylinder for a double L-profile extrusion molding device Figure 2 .

[0024] Figure 6 Explosion diagram of the straightening cylinder structure of a double L-profile extrusion molding device Figure 1 .

[0025] Figure 7 Explosion diagram of the straightening cylinder structure of a double L-profile extrusion molding device Figure 2 .

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1-extrusion cylinder, 2-blank, 3-extrusion shaft, 4-extrusion die, 401-first mounting hole, 5-straightening cylinder, 501-fixed ring plate, 502-fixed half cylinder, 503-movable half cylinder, 504-second mounting hole, 505-third mounting hole, 506-slide groove, 507-end support plate, 508-fourth mounting hole, 509-side support plate, 510-fifth mounting hole, 511-slider, 6-double L profile body. DETAILED DESCRIPTION

[0028] 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 of 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. Specific embodiment 1

[0030] See also Figure 1-7 The utility model is a double L-profile extrusion forming device, comprising an extrusion barrel 1, an extrusion shaft 3, an extrusion die 4 and a straightening barrel 5; the extrusion barrel 1 is a cylindrical part, fixedly connected to a press, and a blank 2 is arranged inside the extrusion barrel 1; the extrusion shaft 3 is a step structure, fixedly connected to the press, and the extrusion shaft 3 cooperates with the inner hole of the extrusion barrel 1 for extruding the blank 2; the extrusion die 4 is fixed on the end face of the extrusion barrel 1, and its internal cavity gradually changes from a circular shape to a double L shape; the straightening barrel 5 is a cylindrical part, fixed on the end face of the extrusion die 4, and its internal cavity is a double L shape, which performs online straightening on the double L-profile body 6 after extrusion forming.

[0031] Specifically, the straightening cylinder 5 includes a fixed ring plate 501, a fixed semi-cylinder 502 and a movable semi-cylinder 503; the fixed ring plate 501 is fixed to the end face of the extrusion die 4 by fasteners, the fixed semi-cylinder 502 is fixed to the end face of the fixed ring plate 501 by fasteners, the end of the movable semi-cylinder 503 is slidably matched with the fixed ring plate 501, and the movable semi-cylinder 503 and the fixed semi-cylinder 502 are locked by fasteners.

[0032] Furthermore, four first mounting holes 401 evenly distributed along the circumference are arranged on the end surface of the extrusion die 4 ; four second mounting holes 504 evenly distributed along the circumference are arranged on the fixed ring plate 501 , and the second mounting holes 504 match the first mounting holes 401 .

[0033] Furthermore, side support plates 509 are fixed at the joints on the upper and lower sides of the fixed semi-cylinder 502 and the movable semi-cylinder 503, and a fifth mounting hole 510 is provided on the side support plates 509; a slider 511 is fixed on the end surface of the movable semi-cylinder 503 close to the fixed ring plate 501, and the slider 511 is slidably matched with the slide groove 506, and the slide groove 506 is provided on the fixed ring plate 501. Specific embodiment 2

[0035] See also Figure 3 On the basis of the first specific embodiment, end support plates 507 are fixed to both end surfaces of the fixed semi-cylinder 502 and the movable semi-cylinder 503 , and a fourth mounting hole 508 is provided on the end support plates 507 .

[0036] Furthermore, a third mounting hole 505 is provided on the fixed ring plate 501 , and the third mounting hole 505 matches the fourth mounting hole 508 .

[0037] Working principle: firstly, the billet 2 is made by using the billet 2 making equipment until the shape of the upper end of the billet 2 matches the inner diameter of the extrusion cylinder 1, and then the billet 2 is heated by using the billet 2 heating equipment to make the heating temperature below the phase transition point temperature;

[0038] Then, the extrusion cylinder 1 and the extrusion shaft 3 are fixed on the press respectively, and the straightening cylinder 5 is spliced ​​into the required length according to actual needs. When splicing, the end support plates 507 of the two fixed semi-cylinders 502 are aligned and locked by fasteners, and the end support plates 507 of the two movable semi-cylinders 503 are aligned and locked by fasteners, and then the extrusion cylinder 1 and the extrusion die 3 are preheated;

[0039] Then, the scale removal device for the blank 1 is used to remove the oxide skin on the surface of the blank 1, and then the glass powder is evenly sprinkled on the surface of the blank 1 for lubrication, and then the blank 1 is placed in a heating device and heated to a specified temperature and then kept warm for 30 minutes;

[0040] The heated blank 2 is placed in the extrusion cylinder 1, and the blank 2 is extruded through the extrusion shaft 3 at a set extrusion speed. During extrusion, the blank 2 passes through the extrusion die 4 and is formed, and then continues to move toward the straightening cylinder 5 to perform online straightening of the double L-profile body 6; the fasteners on the side support plate 509 are loosened, and the fixed semi-cylinder 502 and the movable semi-cylinder 503 are separated at this time, and the movable semi-cylinder 503 is pulled outward, so that the slider 511 moves along the slide groove 506, and the double L-profile body 6 is taken out from the fixed semi-cylinder 502.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double L-profile extrusion molding device, comprising an extrusion cylinder (1), an extrusion shaft (3), an extrusion die (4) and a straightening cylinder (5); characterized in that: The extrusion cylinder (1) is a cylindrical member fixedly connected to the press, and a blank (2) is arranged inside the extrusion cylinder (1); The extrusion shaft (3) is a stepped structure, fixedly connected to the press, and the extrusion shaft (3) cooperates with the inner hole of the extrusion cylinder (1) to extrude the blank (2); The extrusion die (4) is fixed on the end surface of the extrusion cylinder (1), and its internal cavity gradually changes from a circular shape to a double L shape; The straightening cylinder (5) is a cylindrical part fixed on the end surface of the extrusion die (4), and its internal cavity is double L-shaped, and performs online straightening on the double L profile body (6) after extrusion; The straightening cylinder (5) comprises a fixed ring plate (501), a fixed semi-cylinder (502) and a movable semi-cylinder (503); The fixed ring plate (501) is fixed to the end surface of the extrusion die (4) by means of fasteners, the fixed semi-cylinder (502) is fixed to the end surface of the fixed ring plate (501) by means of fasteners, the end of the movable semi-cylinder (503) is slidably matched with the fixed ring plate (501), and the movable semi-cylinder (503) and the fixed semi-cylinder (502) are locked by means of fasteners.

2. A double L-profile extrusion molding device according to claim 1, characterized in that: The end surface of the extrusion die (4) is provided with four first mounting holes (401) evenly distributed along the circumference; The fixed ring plate (501) is provided with four second mounting holes (504) evenly distributed along the circumference, and the second mounting holes (504) match the first mounting holes (401).

3. A double L-profile extrusion molding device according to claim 1, characterized in that: End support plates (507) are fixed to both end surfaces of the fixed semi-cylinder (502) and the movable semi-cylinder (503), and a fourth mounting hole (508) is provided on the end support plates (507).

4. A double L-profile extrusion molding device according to claim 3, characterized in that: The fixing ring plate (501) is also provided with a third mounting hole (505), and the third mounting hole (505) matches the fourth mounting hole (508).

5. The double L-profile extrusion molding device according to claim 1, characterized in that: Side support plates (509) are fixed to the joints on the upper and lower sides of the fixed semi-cylinder (502) and the movable semi-cylinder (503), and a fifth mounting hole (510) is provided on the side support plates (509).

6. A double L-profile extrusion molding device according to claim 1, characterized in that: A sliding block (511) is fixed on the end surface of the movable semi-cylinder (503) close to the fixed ring plate (501), and the sliding block (511) is slidably matched with a sliding groove (506), and the sliding groove (506) is arranged on the fixed ring plate (501).

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