Special-shaped multi-cavity extrusion container

Abstract

The special-shaped multi-cavity extrusion container comprises an inner lining assembly and an outer lining assembly, the inner lining assembly is provided with a plurality of blank cavities which are arranged side by side at intervals in the first direction, the blank cavities penetrate through the two ends of the inner lining assembly in the second direction, and the section of each blank cavity is in a non-circular shape; the outer lining assembly is provided with an installation cavity matched with the outer shape of the inner lining assembly, and the inner lining assembly is detachably installed in the installation cavity. According to the utility model, the blank pre-distribution is realized through the design of a plurality of special-shaped blank cavities, the extrusion force is effectively reduced, the material utilization rate is improved, the disassembly and replacement work of the blank cavities is greatly simplified, the maintenance is more convenient, the manufacturing cost is reduced, and the service life of the extrusion cylinder is prolonged; and the one-time forming requirements of ultra-wide, ultra-thin and complex-section light alloy profiles in the fields of transportation, new energy, aerospace, buildings and the like are met.

Description

Technical Field

[0001] This utility model relates to the field of light alloy profile extrusion equipment, and in particular to a non-circular multi-cavity extrusion cylinder. Background Technology

[0002] Lightweight alloy profiles, with their lightweight, high strength, and plasticity, are widely used in transportation, new energy, aerospace, and construction industries. However, with the increasing demand for integrated, ultra-wide, ultra-thin, and complex irregular cross-sections, traditional single-cylinder extrusion is struggling to meet the following bottlenecks: as the target width of the extruded profile increases, the material flow path becomes more complex, and frictional resistance and material flow resistance rise significantly, often exceeding the rated tonnage limit of the extruder; single-cylinder circular billets are prone to insufficient filling, stress concentration, uneven deformation, and uneven strength when extruding complex cross-sections; insufficient distribution of compensating flow channels necessitates multiple processing passes or subsequent splicing, complicating the process and reducing overall strength.

[0003] Although multi-cavity extrusion cylinders have emerged on the market and can alleviate the extrusion pressure problem to some extent, the following problems still exist: the unit cavity volume of the circular multi-cavity scheme is limited, resulting in a small volume of blank that can be processed in a single operation, which indirectly increases the proportion of material wasted in the die during the extrusion process and reduces the material utilization rate. If the cavity needs to be replaced, the entire structure must be replaced, and the number and shape of the cavities cannot be flexibly adjusted. Furthermore, the entire extrusion cylinder needs to be made of high-cost wear-resistant and heat-resistant materials. Utility Model Content

[0004] The purpose of this utility model is to provide an irregularly shaped multi-cavity extrusion cylinder to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0006] This utility model provides an irregularly shaped multi-cavity extrusion cylinder, comprising:

[0007] The inner liner assembly has a plurality of blank cavities arranged side by side at intervals along a first direction, and the plurality of blank cavities penetrate through both ends of the inner liner assembly along a second direction. The first direction and the second direction are arranged perpendicularly, and the cross-sectional shape of the blank cavity is non-circular.

[0008] The outer liner assembly has a mounting cavity that matches the external shape of the inner liner assembly, and the inner liner assembly is detachably mounted in the mounting cavity.

[0009] The beneficial effects of this novel irregular-shaped multi-cavity extrusion cylinder are:

[0010] This invention achieves pre-distribution of billets through a multi-cavity irregular shape design, effectively reducing extrusion pressure and improving material utilization. The inner and outer lining components are assembled in a detachable manner, greatly simplifying the disassembly and replacement of the billet cavities and making maintenance more convenient. Furthermore, the inner lining component can be made of high-strength, wear-resistant, and heat-resistant materials, while the outer lining component can be made of low-cost materials, reducing manufacturing costs and extending the service life of the extrusion cylinder. It is suitable for the one-time forming needs of ultra-wide, ultra-thin, and complex cross-section light alloy profiles in fields such as transportation, new energy, aerospace, and construction.

[0011] As a further improvement to the above technical solution, the inner lining assembly includes a main body module, and multiple blank cavities are integrally formed within the main body module.

[0012] As a further improvement to the above technical solution, the mounting cavity is a cavity structure, and the main module is interference-fitted into the mounting cavity.

[0013] As a further improvement to the above technical solution, the inner lining assembly includes multiple unit modules, each unit module being a tubular structure, with multiple blank cavities formed within the cavities of the multiple unit modules respectively.

[0014] As a further improvement to the above technical solution, the outer liner assembly includes a first cylinder and a second cylinder, the first cylinder and the second cylinder being detachably stacked together along a third direction, the mounting cavity including a plurality of sub-cavities formed between the first cylinder and the second cylinder, the plurality of unit modules being clamped in the plurality of sub-cavities, and the third direction being respectively perpendicular to the first direction and the second direction.

[0015] As a further improvement to the above technical solution, the first cylinder and the second cylinder are provided with multiple grooves on one side where they overlap, and two overlapping grooves form the sub-cavity.

[0016] As a further improvement to the above technical solution, the inner lining component is made of hot work die steel, and the outer lining component is made of alloy structural steel.

[0017] As a further improvement to the above technical solution, the outer lining assembly is provided with an online heating and heat preservation device, which is used to heat and preserve the multiple blank cavities.

[0018] As a further improvement to the above technical solution, the outer liner assembly is equipped with an online temperature sensing and control device to monitor and adjust the temperature of the billet cavity in real time.

[0019] As a further improvement to the above technical solution, the cross-sectional shape of the plurality of blank cavities is one or a combination of flat, square, and elliptical shapes, and the spacing between the plurality of blank cavities is consistent or regularly increasing / decreasing.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is a schematic diagram of the structure of the irregular multi-cavity extrusion cylinder provided by this utility model, specifically Embodiment 1.

[0023] Figure 2 This is a schematic diagram of the structure of the irregular multi-cavity extrusion cylinder provided by this utility model, when the outer liner component of Embodiment 2 is an integral piece;

[0024] Figure 3 This is a schematic diagram of the structure of the irregular multi-cavity extrusion cylinder provided by this utility model, when the outer liner component of Embodiment 2 is a split type;

[0025] Icon labels:

[0026] Inner liner assembly 100; main body module 110; billet cavity 120; unit module 130;

[0027] Outer liner assembly 200; mounting cavity 210; first cylinder 220; second cylinder 230; sub-cavity 240; groove 250. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0033] Reference Figures 1-3 The following are embodiments of the irregularly shaped multi-cavity extrusion cylinder of this utility model:

[0034] Example 1:

[0035] like Figure 1 As shown, the irregularly shaped multi-cavity extrusion cylinder of this embodiment includes an inner liner assembly 100 and an outer liner assembly 200.

[0036] The inner lining assembly 100 includes a main body module 110, which is an integral forging. The main body module 110 has multiple blank cavities 120. The multiple blank cavities 120 are arranged side by side at intervals along a first direction. The blank cavities 120 penetrate both ends of the main body module 110 along a second direction. The first direction and the second direction are perpendicular to each other. In this embodiment, the first direction and the second direction are defined as the front-back direction and the left-right direction on a horizontal plane. It can be understood that the blank cavities 120 extend and penetrate along the left-right direction, and the multiple blank cavities 120 are arranged side by side along the front-back direction. In this embodiment, the multiple blank cavities 120 are arranged in a line along the horizontal central axis and symmetrically distributed about the vertical central axis.

[0037] The cross-sectional shape of the blank cavity 120 in this embodiment is non-circular, including but not limited to square, flat or elliptical, and the spacing between two adjacent blank cavities 120 is consistent or regularly increasing / decreasing.

[0038] The flat cross-section has the following characteristics: its profile consists of two parallel straight lines (upper and lower boundaries) and two arcs connecting the endpoints of the parallel straight lines (left and right boundaries); the upper and lower straight lines are of equal length, ensuring that the blank cavity 120 has a uniform thickness in the vertical direction; the left and right arcs can be circular arcs or cycloid curves to optimize the stress distribution during material flow and reduce stress concentration. The square cross-section has the following characteristics: the cross-section is a rectangular frame, and rounded corners or right angles can be maintained at the four corners as needed. The elliptical cross-section has the following characteristics: the cross-section is a standard elliptical curve, and the major and minor axes can be set independently to accommodate the material distribution of symmetrical or wide flat plates.

[0039] The cross-sectional dimensions and shape parameters of the blank cavity 120 can be customized according to the width, thickness, cross-sectional geometry or flow characteristics of the target profile in order to optimize material utilization and reduce extrusion pressure.

[0040] The outer liner assembly 200 is made of integral forging and has a mounting cavity 210 that matches the external shape of the main module 110. The main module 110 is detachably mounted in the mounting cavity 210.

[0041] In this embodiment, the mounting cavity 210 is a cavity structure. The mounting cavity 210 extends through the second direction. The main module 110 is installed in the mounting cavity 210 with an interference fit. The interference fit between the main module 110 and the outer liner assembly 200 is 0.5 to 1.5 mm to take into account both assembly coaxiality and thermal expansion and contraction coordination.

[0042] In this embodiment, the inner liner component 100 is made of hot work die steel. Specifically, the main module 110 is made of H13 HRC die steel, while the outer liner component 200 is made of alloy structural steel (such as 5CrNiMo) with slightly lower strength and lower cost than hot work die steel. The two are assembled with an interference fit to ensure coaxiality and overall strength, and also facilitate the coordination of thermal expansion and contraction, thereby improving the durability of the extrusion cylinder.

[0043] This utility model achieves pre-distribution of billets through the design of multiple irregularly shaped billet cavities 120, effectively reducing extrusion pressure and improving material utilization. The main module 110 and the outer liner assembly 200 are assembled in a detachable manner, which greatly simplifies the disassembly and replacement of the billet cavities 120 and makes maintenance more convenient. Furthermore, the inner liner assembly 100 can be made of high-strength, wear-resistant, and heat-resistant materials, while the outer liner assembly 200 can be made of low-cost materials, reducing manufacturing costs and extending the service life of the extrusion cylinder. It is suitable for the one-time forming needs of ultra-wide, ultra-thin, and complex cross-section light alloy profiles in fields such as transportation, new energy, aerospace, and construction.

[0044] The outer liner assembly 200 of this embodiment is equipped with an online heating and heat preservation device. The online heating and heat preservation device is used to heat and preserve multiple billet cavities 120. The online heating and heat preservation device of this embodiment includes a battery cell pre-embedded in the outer liner assembly 200. The battery cell is used to heat and preserve the entire extrusion cylinder.

[0045] Furthermore, the outer liner assembly 200 is equipped with an online temperature sensing and control device to monitor and adjust the temperature of the blank cavity 120 in real time.

[0046] Example 2:

[0047] like Figure 2 and Figure 3 As shown, the difference from Embodiment 1 lies in the inner lining assembly 100. The inner lining assembly 100 of this embodiment includes multiple unit modules 130. The unit module 130 is a tubular structure, and multiple blank cavities 120 are respectively formed in the cavities of the multiple unit modules 130.

[0048] It is understood that this embodiment uses an independent blank cavity 120, which has a wall thickness of 30mm and can be replaced individually.

[0049] The inner liner assembly 100 and the outer liner assembly 200 can be connected in two ways:

[0050] like Figure 2 As shown, the outer liner assembly 200 is a cylindrical structure. The outer liner assembly 200 is an integral piece. The outer liner assembly 200 has multiple sub-cavities 240 that are smaller than the external dimensions of the unit module 130. The sub-cavities 240 are through-hole structures and are connected to the unit module 130 one by one through interference fit.

[0051] like Figure 3 As shown, the outer liner assembly 200 is a split type, and the outer liner assembly 200 includes a first cylinder 220 and a second cylinder 230. The first cylinder 220 and the second cylinder 230 are detachably stacked together along a third direction. The mounting cavity 210 includes a plurality of sub-cavities 240 formed between the first cylinder 220 and the second cylinder 230. A plurality of unit modules 130 are clamped in the plurality of sub-cavities 240, wherein the third direction is respectively perpendicular to the first direction and the second direction.

[0052] It is understandable that the first cylinder 220 and the second cylinder 230 are placed above and below the multiple unit modules 130 respectively, and pressure is applied inward through mechanical connection, servo or hydraulic means to fix the unit modules 130, so that individual blank chambers 120 can be maintained and replaced individually.

[0053] The first cylinder 220 and the second cylinder 230 are provided with multiple grooves 250 on one side where they overlap, and the two grooves 250 that overlap each other form a sub-cavity 240.

[0054] This invention utilizes the aforementioned irregularly shaped multi-cavity extrusion cylinder to produce aluminum alloy profiles with a width of 1500mm and a thickness of 1.5mm. The extrusion cylinder has three blank cavities 120 arranged laterally inside. Practical application has shown that the irregularly shaped three-cavity extrusion cylinder enables the integrated production of 1500mm wide aluminum alloy profiles without the need for welding after producing narrow profiles, similar to traditional extrusion techniques, significantly reducing production time and costs. Furthermore, compared to the method of producing 1500mm aluminum alloy profiles using a circular extrusion cylinder (which requires five blank cavities 120 with a diameter of 200mm and a spacing of 100mm), the irregularly shaped three-cavity extrusion cylinder achieves higher material utilization and safer extrusion cylinder strength. Specifically, the flat three-cavity extrusion cylinder can increase material utilization by 30% and reduce the maximum stress on the extrusion cylinder during extrusion by 50%.

[0055] This utility model has the following beneficial effects: Reduced extrusion pressure, breaking through the limitations of extrudable profile width: The pre-allocated multi-cavity 120 pattern improves material flow characteristics, thereby reducing the extrusion pressure required for material deformation and achieving integrated extrusion of wide profiles; Improved material utilization: By flexibly designing the shape and size of the blank cavity 120, more blanks can be extruded at once compared to a circular blank cavity, thus increasing the yield; Increased extrusion cylinder lifespan: The flexibly designed shape and size of the blank cavity 120 provides a wider range of blank cavity spacing, thereby strengthening the position of the multi-cavity spacing with the greatest risk of damage during multi-cavity extrusion, thus improving the overall lifespan of the extrusion cylinder; Wide applicability: The flexible adjustment of the number and shape of the cavities meets various needs such as new energy vehicle pallets, aviation skins, and building profiles.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-cavity extrusion cylinder with an irregular shape, characterized in that, include: The inner liner assembly has a plurality of blank cavities arranged side by side at intervals along a first direction, and the plurality of blank cavities penetrate through both ends of the inner liner assembly along a second direction. The first direction and the second direction are arranged perpendicularly, and the cross-sectional shape of the blank cavity is non-circular. The outer liner assembly has a mounting cavity that matches the external shape of the inner liner assembly, and the inner liner assembly is detachably mounted in the mounting cavity.

2. The irregularly shaped multi-cavity extrusion cylinder according to claim 1, characterized in that: The lining assembly includes a main module, and multiple blank cavities are integrally formed within the main module.

3. The irregularly shaped multi-cavity extrusion cylinder according to claim 2, characterized in that: The mounting cavity has a cavity structure, and the main module is installed in the mounting cavity with an interference fit.

4. The irregularly shaped multi-cavity extrusion cylinder according to claim 1, characterized in that: The liner assembly includes multiple unit modules, each unit module being a tubular structure, with multiple blank cavities formed within the cavities of the multiple unit modules.

5. The irregularly shaped multi-cavity extrusion cylinder according to claim 4, characterized in that: The outer liner assembly includes a first cylinder and a second cylinder, which are detachably stacked together along a third direction. The mounting cavity includes a plurality of sub-cavities formed between the first cylinder and the second cylinder, and a plurality of unit modules are clamped in the plurality of sub-cavities. The third direction is respectively perpendicular to the first direction and the second direction.

6. The irregularly shaped multi-cavity extrusion cylinder according to claim 5, characterized in that: The first cylinder and the second cylinder are provided with multiple grooves on one side where they overlap, and two overlapping grooves form the sub-cavity.

7. The irregularly shaped multi-cavity extrusion cylinder according to claim 1, characterized in that: The inner lining component is made of hot work die steel, and the outer lining component is made of alloy structural steel.

8. The irregularly shaped multi-cavity extrusion cylinder according to claim 1, characterized in that: The outer liner assembly is equipped with an online heating and heat preservation device, which is used to heat and preserve the multiple blank cavities.

9. The irregularly shaped multi-cavity extrusion cylinder according to claim 8, characterized in that: The outer liner assembly is equipped with an online temperature sensing and control device to monitor and adjust the temperature of the billet cavity in real time.

10. The irregularly shaped multi-cavity extrusion cylinder according to claim 1, characterized in that: The cross-sectional shape of the multiple blank cavities is one or a combination of flat, square, and elliptical shapes, and the spacing between the multiple blank cavities is consistent or regularly increasing / decreasing.

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