Flat extrusion container device with low stress and long service life

Abstract

The invention discloses a low-stress long-life flat extrusion container device, and belongs to the technical field of extruders, the device comprises an inner lining layer, a middle lining layer, an outer sleeve and heating pipe assemblies, the middle lining layer sleeves the outer side of the inner lining layer, the outer sleeve sleeves the outer side of the middle lining layer, and the heating pipe assemblies are respectively arranged in the inner lining layer, the middle lining layer and the outer sleeve. A through hole is formed in the middle of the lining layer and is in a dumbbell shape. The whole structure is simple, the through holes of the extrusion container are in the dumbbell shape, stress can be evenly distributed and reduced, meanwhile, the multiple heating pipe assemblies are arranged, stress concentration of extrusion container parts can be reduced under the action of a thermal field, and the service life of the extrusion container parts is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of extruders, and in particular relates to a low-stress and long-life flat extrusion cylinder device. Background Art

[0002] The extrusion barrel is an important component of the extruder equipment. The extrusion barrel is used to hold the ingot cavity. It needs to withstand high temperatures of 400℃-500℃, high pressures of up to 800MP and high coefficients of friction during operation. Therefore, the extrusion barrel is in a very harsh working environment when working. In order to adapt to the flat and wide profile metal extrusion production, flat extrusion barrels are often used for production. During the production process, due to the large stress value around the inner hole of the flat extrusion barrel, the flat extrusion barrel is deformed, the production accuracy is reduced, and even fracture occurs, which seriously shortens the service life and increases the production cost. Summary of the invention

[0003] In order to at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides a low-stress and long-life flat extrusion cylinder device.

[0004] The technical solution of the present invention is as follows: A low-stress, long-life flat extrusion cylinder device is provided, which comprises an inner lining layer, a middle lining layer, an outer sleeve and a heating tube assembly. The middle lining layer is sleeved on the outside of the inner lining layer, and the outer sleeve is sleeved on the outside of the middle lining layer. The heating tube assembly is respectively arranged inside the inner lining layer, the middle lining layer and the outer sleeve. A through hole is opened in the middle of the inner lining layer, and the through hole is in a dumbbell shape.

[0005] Furthermore, in the above-mentioned low-stress and long-life flat extrusion cylinder device, the inner lining layer, the middle lining layer and the outer jacket are all provided with a plurality of heating mounting holes along the length direction, and the heating tube assembly is arranged on the heating mounting holes. The areas where the plurality of heating mounting holes on the inner lining layer, the middle lining layer and the outer jacket are located are respectively divided into a first heating zone, a second heating zone, a third heating zone, a fourth heating zone, a fifth heating zone and a sixth heating zone around the through hole, and the heating tube assemblies in different heating zones can be independently heated and controlled.

[0006] Furthermore, in the above-mentioned low-stress and long-life flat extrusion cylinder device, the heating tube assembly includes a heating tube, a mounting plate and a connecting pin. The diameter of the heating tube matches the diameter of the heating mounting hole. The heating tube can pass through the heating mounting hole. The connecting pins are symmetrically arranged on the two end surfaces of the heating tube. The two ends of the heating tube are respectively sleeved with the mounting plates. A first mounting hole is provided on the mounting plate. The inner lining layer, the middle lining layer and the outer sleeve are respectively provided with second mounting holes for matching with the first mounting hole.

[0007] Furthermore, in the above-mentioned low-stress and long-life flat extrusion cylinder device, the heating tube includes a first heating unit, a second heating unit and a third heating unit which are connected in sequence, and the first heating unit, the second heating unit and the third heating unit independently perform heating and temperature control.

[0008] Furthermore, in the above-mentioned low-stress and long-life flat extrusion cylinder device, the through hole includes two first straight segments, four circular arc segments and two second straight segments, and the two first straight segments, four circular arc segments and two second straight segments are surrounded into a dumbbell shape.

[0009] The low stress and long life flat extrusion cylinder device of the present invention has the following advantages and beneficial effects: The overall structure of the present invention is simple, and the through hole of the extrusion cylinder is arranged in a dumbbell shape, which can make the stress distribution uniform and reduce the stress. At the same time, by arranging multiple heating tube assemblies and arranging and controlling the multiple heating tube assemblies in partitions, the effect of the thermal field can be used to reduce the stress concentration of the extrusion cylinder parts and increase the service life of the extrusion cylinder parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 It is a front view of the low stress and long life flat extrusion cylinder device of the present invention; Figure 2 for Figure 1 AA section view; Figure 3 It is a schematic diagram of a heating tube assembly of a low-stress and long-life flat extrusion cylinder device of the present invention; Figure 4 for Figure 3 Left view of .

[0011] Description of reference numerals: 1: lining layer, 11: through hole, 111: first straight segment, 112: arc segment, 113: second straight segment; 2: Middle lining; 3: Coat; 4: heating tube assembly, 41: heating tube, 411: first heating unit, 412: second heating unit, 413: third heating unit, 42: mounting plate, 43: connecting pins; 5: Heating installation hole; 61: first heating zone, 62: second heating zone, 63: third heating zone, 64: fourth heating zone, 65: fifth heating zone, 66: sixth heating zone. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0013] like Figures 1 to 4 As shown, an embodiment of the present invention provides a low-stress and long-life flat extrusion cylinder device, comprising an inner lining layer 1, a middle lining layer 2, an outer jacket 3 and a heating tube assembly 4, wherein the middle lining layer 2 is sleeved on the outer side of the inner lining layer 1, and the outer jacket 3 is sleeved on the outer side of the middle lining layer 2, and the heating tube assembly 4 is respectively arranged inside the inner lining layer 1, the middle lining layer 2 and the outer jacket 3, and a through hole 11 is opened in the middle of the inner lining layer 2, and the through hole 11 is in a dumbbell shape.

[0014] In the embodiment of the present invention, by arranging the through hole 11 in a dumbbell shape, the stress generated during extrusion of the extrusion barrel can be evenly distributed and the stress can be reduced. At the same time, by arranging a plurality of heating tube assemblies 4 on the inner lining layer 1, the middle lining layer 2 and the outer jacket 3 respectively, the intervention effect of the thermal field can be utilized to reduce the stress concentration of the extrusion barrel components and improve the service life of the extrusion barrel components.

[0015] refer to Figure 1-2 Furthermore, in the low-stress and long-life flat extrusion cylinder device provided in an embodiment of the present invention, the inner lining layer 1, the middle lining layer 2 and the outer sleeve 3 are all provided with a plurality of heating installation holes 5 along the length direction, and the heating tube assembly 4 is arranged on the heating installation hole 5. The areas where the plurality of heating installation holes 5 on the inner lining layer 1, the middle lining layer 2 and the outer sleeve 3 are located are respectively divided into a first heating zone 61, a second heating zone 62, a third heating zone 63, a fourth heating zone 64, a fifth heating zone 65 and a sixth heating zone 66 around the through hole 11, and the heating tube assemblies 4 in different heating zones can be independently heated and controlled.

[0016] In the embodiment of the present invention, the plurality of heating tube assemblies 4 are divided into zones, and the heating tube assemblies 4 in different zones can be independently controlled for heating, so that the heating and temperature control of the heating tube assemblies 4 in different zones can be performed according to the actual heating requirements and stress distribution of the actual extrusion process, thereby further reducing the stress concentration of the extrusion barrel components and improving the service life of the extrusion barrel components.

[0017] refer to Figure 1-4Furthermore, in the low-stress and long-life flat extrusion cylinder device provided in an embodiment of the present invention, the heating tube assembly 4 includes a heating tube 41, a mounting plate 42 and a connecting pin 43. The diameter of the heating tube 41 matches the diameter of the heating mounting hole 5. The heating tube 41 can pass through the heating mounting hole 5. The connecting pins 43 are symmetrically arranged on the two end surfaces of the heating tube 41. The two ends of the heating tube 41 are respectively sleeved with mounting plates 42. A first mounting hole is opened on the mounting plate 42. The inner lining layer 1, the middle lining layer 2 and the outer sleeve 3 are respectively provided with second mounting holes for matching with the first mounting holes.

[0018] In an embodiment of the present invention, the mounting plate 42 is detachably fixed to the inner lining layer 1, or the middle lining layer 2, or the outer sleeve 3 by means of the cooperation of the first mounting hole, the second mounting hole and the screw. In this way, it can be ensured that the heating tube 41 can be independently taken out and replaced after being damaged, thereby effectively reducing the maintenance cost of the extrusion cylinder.

[0019] refer to Figure 2 Furthermore, in the low-stress and long-life flat extrusion barrel device provided in the embodiment of the present invention, the heating tube 41 includes a first heating unit 411, a second heating unit 412 and a third heating unit 413 connected in sequence, and the first heating unit 411, the second heating unit 412 and the third heating unit 413 can independently perform heating and temperature control. In this way, the heating tube 41 can form three heating zones, which can form a total of 18 independent heating zones in combination with the previously set first heating zone 61, the second heating zone 62, the third heating zone 63, the fourth heating zone 64, the fifth heating zone 65 and the sixth heating zone 66. Each heating zone can independently perform heating and temperature control, which can further improve the temperature control accuracy of different areas of the extrusion barrel, make full use of the influence of the thermal field on the stress field, further reduce the local stress value of the extrusion barrel, and increase the service life of the extrusion barrel.

[0020] refer to Figure 1 Furthermore, in the low-stress and long-life flat extrusion cylinder device provided in an embodiment of the present invention, the through hole 11 includes two first straight sections 111, four circular arc sections 112 and two second straight sections 113, and the two first straight sections 111, four circular arc sections 112 and two second straight sections 113 are surrounded into a dumbbell shape.

[0021] In the embodiment of the present invention, by utilizing the first straight segment 111 , the arc segment 112 and the second straight segment 113 to form the dumbbell-shaped through hole 11 , the stress generated during the extrusion of the extrusion cylinder can be evenly distributed and the stress can be greatly reduced.

[0022] In summary, compared with the prior art, the low-stress and long-life flat extrusion cylinder device of the embodiment of the present invention has the following advantages and beneficial effects: The overall structure of the present invention is simple, and the through hole of the extrusion cylinder is arranged in a dumbbell shape, which can make the stress distribution uniform and reduce the stress. At the same time, by arranging multiple heating tube assemblies and arranging and controlling the multiple heating tube assemblies in partitions, the effect of the thermal field can be used to reduce the stress concentration of the extrusion cylinder parts and increase the service life of the extrusion cylinder parts.

[0023] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" 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. At the same time, 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 a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low stress and long life flat extrusion cylinder device, characterized in that: The low-stress, long-life flat extrusion cylinder device comprises an inner lining layer, a middle lining layer, an outer jacket and a heating tube assembly, wherein the middle lining layer is sleeved on the outer side of the inner lining layer, the outer jacket is sleeved on the outer side of the middle lining layer, the inner lining layer, the middle lining layer and the outer jacket are respectively provided with the heating tube assembly, and a through hole is opened in the middle of the inner lining layer, and the through hole is in a dumbbell shape; The inner lining layer, the middle lining layer and the outer jacket are all provided with a plurality of heating installation holes along the length direction, the heating tube assembly is arranged on the heating installation holes, and the areas where the plurality of heating installation holes on the inner lining layer, the middle lining layer and the outer jacket are located are respectively divided into a first heating zone, a second heating zone, a third heating zone, a fourth heating zone, a fifth heating zone and a sixth heating zone around the through hole, and the heating tube assemblies in different heating zones can be independently heated and controlled; The heating tube assembly comprises a heating tube, a mounting plate and a connecting pin, wherein the diameter of the heating tube matches the diameter of the heating mounting hole, the heating tube can pass through the heating mounting hole, the connecting pins are symmetrically arranged on both end surfaces of the heating tube, the mounting plates are respectively sleeved on both ends of the heating tube, a first mounting hole is provided on the mounting plate, and second mounting holes for matching with the first mounting hole are respectively provided on the inner lining layer, the middle lining layer and the outer jacket, and the mounting plate is detachably fixed to the inner lining layer, the middle lining layer or the outer jacket through the cooperation of the first mounting hole, the second mounting hole and the screw; The heating tube comprises a first heating unit, a second heating unit and a third heating unit which are connected in sequence, and the first heating unit, the second heating unit and the third heating unit perform heating and temperature control independently.

2. The low stress and long life flat extrusion cylinder device according to claim 1, characterized in that: The through hole comprises two first straight segments, four arc segments and two second straight segments, and the two first straight segments, the four arc segments and the two second straight segments are surrounded to form a dumbbell shape.

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