Continuous extrusion coating equipment
By forming an armor layer on the outside of the core material using a continuous extruder and extrusion die, and by combining this with the use of a diameter reduction die, the problems of surface friction marks and low production efficiency in the preparation of the armor layer have been solved, and efficient and smooth continuous production of the armor layer has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI AINUO METAL MATERIALS CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-10
AI Technical Summary
Existing armor layer preparation methods suffer from surface friction marks and low production efficiency, making it impossible to achieve continuous mass production.
An armor layer is formed on the outside of the core material using a continuous extruder and extrusion die. By setting an interval structure in which the outlet of the extrusion cavity is parallel to the core axis, the high-temperature armor layer is prevented from directly adhering to the insulation layer. Combined with a diameter reduction die, continuous forming and diameter reduction are performed to form a smooth armor layer.
It enables continuous production of armor layers with smooth surfaces that meet appearance quality requirements, improves production efficiency, and avoids the risks of friction marks and burns to the insulation layer.
Smart Images
Figure 1
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to new energy electric automobile conducting part processing technical field more specifically, relate to a kind of continuous extrusion coating equipment. BACKGROUND
[0002] Conducting part is the component of electric automobile high voltage connector wire harness with large cost proportion.Armored insulation conducting part refers to the conducting part that insulation layer and armor layer are formed successively outside conductor, and the main role of insulation layer is insulation protection, preventing electric leakage, and the main role of armor layer is electromagnetic shielding, preventing electromagnetic radiation leakage.
[0003] In prior art, one kind of preparation method of armor layer is as follows: armored sleeve and insulated conducting part of cladding insulation layer are prepared respectively, armored sleeve is sleeved outside insulated conducting part, cold drawing is carried out by drawing device, armored sleeve is shrunk, and gap between armored sleeve and insulated conducting part is eliminated, and armored insulation conducting part is prepared.The shortcomings of the above preparation method are as follows: first, the surface of armor layer is easy to leave axial friction mark, which does not meet the appearance quality requirement of product, second, armored sleeve and insulated conducting part are prepared respectively, and armored layer is also needed to be drawn tightly to insulation layer, and the whole preparation process cannot realize batch continuous production, production efficiency is low, and cost is high. UTILITY MODEL CONTENT
[0004] The utility model aims at overcoming the above-mentioned defects existing in prior art, and provides a kind of continuous extrusion coating equipment, and armored layer with smooth surface is formed outside core material by the method of continuous extrusion, and batch continuous production is realized.
[0005] To realize the above-mentioned purpose, the technical scheme of the utility model is as follows:
[0006] A kind of continuous extrusion coating equipment, comprising:
[0007] Continuous extruder, the continuous extruder includes extruding wheel and extruding wheel shoe, extruding wheel is equipped with extruding wheel groove, the position corresponding to the extruding wheel groove of extruding wheel shoe is provided with plug, the extruding wheel groove, the plug and the extruding wheel shoe constitute extrusion cavity, the extrusion cavity is equipped with die orifice, and the continuous extruder is used for continuous extrusion armored blank;
[0008] An extrusion die is connected with the extrusion wheel shoe, the extrusion die comprises a die core and an outer die, the die core is provided with an axial through hole for passing the covered core material, the outer die is sleeved outside the die core, an annular extrusion cavity is arranged between the outer die and the die core, the extrusion cavity is connected with the die mouth, the extension direction of the outlet of the extrusion cavity is parallel to the axis of the die core, and the outlet of the extrusion cavity is spaced from the through hole, the extrusion cavity is used for forming a spaced armor layer outside the covered core material to obtain an armored conductive piece precursor; and
[0009] A reducing die is arranged behind the extrusion die, the armored conductive piece precursor enters the reducing die, and the reducing die reduces the diameter of the armored layer.
[0010] The embodiment of the utility model has the following beneficial effects:
[0011] The utility model discloses a continuous extrusion armored blank by using a continuous extrusion machine, then the armored layer is continuously formed outside the covered core material by the extrusion die, the extension direction of the outlet of the extrusion cavity is parallel to the axis of the die core, and the outlet of the extrusion cavity is spaced from the through hole, so that the armored layer extruded from the extrusion cavity is formed outside the covered core material with spacing, the high-temperature armored layer directly adheres to and burns the insulating layer, and then the outer diameter of the armored layer is reduced by the reducing die, the armored layer is close to or adheres to the insulating layer, the continuous covering production of the armored layer is completed, and the productivity is improved.
[0012] The utility model sets up the reducing die to reduce the diameter of the armored layer after continuous extrusion, the armored layer has not been completely cooled, is easy to deform, compared with the cold drawing reducing diameter of prior art, the surface is smooth, does not leave the friction mark, meets the product appearance quality requirement. ACCURATE DRAWINGS
[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0014] Among them:
[0015] Figure 1 It is the schematic diagram of the continuous extrusion covering equipment of a specific embodiment of the utility model.
[0016] Figure 2 It is the sectional structure schematic diagram of the extrusion die of a specific embodiment of the utility model.
[0017] Figure 3 is a structural schematic view of a cooling system of a specific embodiment of the utility model.
[0018] In the drawing, 10, continuous extrusion machine;11, extrusion wheel;12, extrusive wheel shoe;13, plug;
[0019] 20, extrusion die;21, die core;22, outer die;23, through hole;24, extrusion cavity;25, first sizing band;30, reducing die;31, extrusion cavity;32, second sizing band;40, cooling system;41, box;42, partition;43, through hole;44, first end plate;45, second end plate;46, first drainage cavity;47, first drainage port;48, second drainage cavity;49, second drainage port;
[0020] 100, covered core material;
[0021] 200, armored blank;201, armored layer;202, first gap;
[0022] 300, armored conductive part. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0024] Reference Figure 1 The utility model discloses a kind of continuous extrusion coating equipment, comprising: continuous extrusion machine 10, extrusion die 20 and reducing die 30.
[0025] Continuous extrusion machine 10 includes extrusion wheel 11 and extrusive wheel shoe 12, extrusion wheel 11 is equipped with extrusion wheel groove, the position corresponding extrusion wheel groove of extrusive wheel shoe 12 is provided with plug 13, extrusion wheel groove, plug 13 and extrusive wheel shoe 12 constitute extrusion cavity, extrusion cavity is equipped with die orifice, and continuous extrusion machine 10 is used for continuous extrusion armored blank.
[0026] Combined with reference Figure 2The extrusion die 20 is connected with the extrusion wheel shoe 12, the extrusion die 20 comprises a die core 21 and an outer die 22, the die core 21 is provided with an axial through hole 23 for the covered core material 100 to pass through, the outer die 22 is sleeved outside the die core 21, an annular extrusion cavity 24 is arranged between the outer die 22 and the die core 21, the extrusion cavity 24 is communicated with a die orifice, the extension direction of the outlet of the extrusion cavity 24 is parallel to the axis of the die core, and the outlet of the extrusion cavity 24 is spaced apart from the through hole 23, the extrusion cavity 23 is used for forming the spaced armor layer 201 outside the covered core material 100, so that the armored conductive piece precursor is obtained. In the armored conductive piece precursor, the first gap 202 is arranged between the armor layer 201 and the covered core material 100.
[0027] Reference Figure 1 The diameter reducing die 30 is arranged behind the extrusion die 20, the armored conductive piece precursor enters the diameter reducing die 30, the diameter reducing die 30 reduces the diameter of the armor layer 201, and the armored conductive piece 300 is obtained.
[0028] The diameter reducing die 30 is arranged behind the extrusion die 20, the armored conductive piece precursor enters the diameter reducing die 30, the diameter reducing die 30 reduces the diameter of the armor layer 201, and the armored conductive piece 300 is obtained.
[0029] The diameter reducing die 30 is arranged behind the extrusion die 20, the armored conductive piece precursor enters the diameter reducing die 30, the diameter reducing die 30 reduces the diameter of the armor layer 201, and the armored conductive piece 300 is obtained.
[0030] In the above technical scheme, the diameter reducing of the present application is hot reducing, the temperature of the armor layer 201 entering the diameter reducing die 30 for reducing is at least 40 DEG C, and the highest temperature of the armor layer 201 is determined according to the heat resistance degree that the core material 100 can bear, and specifically can be 200 DEG C to 300 DEG C.
[0031] The technical scheme of the present application can continuously coat the metal armor layer on the surface of the resin insulation layer, and the insulation layer is not burned.
[0032] In one embodiment, the coated core material 100 comprises a conductive core and an insulating layer coated on the surface of the conductive core; the conductive core is a metal conductor material. In other embodiments, the coating layer is not limited to one layer, but can comprise two or more coating layers, and the material of the coating layer can be any material, such as an insulating layer, a conductor layer, etc. The coated core material 100 can also be two or more insulated conductor cores, wherein the insulated conductor core comprises a conductive core and an insulating layer coated on the conductive core.
[0033] In one embodiment, the material of the armor layer 201 is aluminum material, which is light in weight, and can be pure aluminum or aluminum alloy. The aluminum alloy of the armor layer 201 is preferably 1 series or 3 series aluminum alloy.
[0034] In one embodiment, the conductive core is aluminum material, which is light in weight, and can be 6 series aluminum alloy, which has excellent electrical conductivity.
[0035] In one embodiment, the armored conductor 300 comprises an aluminum conductive core, an insulating layer coated on the aluminum conductive core, and an aluminum armor layer coated on the insulating layer.
[0036] In one embodiment, the armored conductor 300 comprises two or more insulated conductive cores and an aluminum armor layer coated on all the insulated conductive cores, and the insulated conductive core comprises an aluminum conductive core and an insulating layer coated on the aluminum conductive core.
[0037] In one embodiment, a first sizing band 25 is arranged at the outlet of the extrusion cavity, and the length of the first sizing band 25 extends in parallel with the axis of the mold core 21. The first sizing band 25 is used to shape the extruded armor layer 201 and provide a smooth surface.
[0038] Preferably, the length of the first sizing band 25 is 1mm-10mm.
[0039] In one embodiment, the reduced-diameter die 30 is provided with an extrusion cavity 31, the inlet size of the extrusion cavity 31 is greater than the outer contour size of the armored conductor precursor, and the outlet size of the extrusion cavity 31 is smaller than the outer contour size of the armored conductor precursor.
[0040] Preferably, a second sizing band 32 is arranged at the outlet of the extrusion cavity 31. Further, the length of the second sizing band 32 is 1mm-10mm.
[0041] In one embodiment, the continuous extrusion coating device further comprises a cooling system 40 arranged between the outlet of the extrusion cavity 24 and the outlet of the reduced-diameter die 30, and the cooling system 40 is used to cool the armor layer 201 to avoid burning the internal core material 100.
[0042] The method for cooling the continuous extrusion armored layer 201 includes: 1) setting the diameter-reducing die 30 at a certain distance from the extrusion die 20, and allowing the product to be naturally cooled during forward movement; 2) setting an online cooling unit between the extrusion die 20 and the diameter-reducing die 30, and cooling the armored layer before it enters the diameter-reducing die, specifically, the online cooling unit includes an online air cooling unit and / or an online water cooling unit, the online air cooling unit can include a blowing device to air cool the moving product; the online water cooling unit can include a spray cooling unit and / or an immersion cooling unit; 3) setting a diameter-reducing die cooling unit to cool the diameter-reducing die 30, and indirectly cool the armored layer 201.
[0043] Specifically, in a specific embodiment, the spray cooling unit can include more than one row of nozzles, each row of nozzles has at least one nozzle, and each row of nozzles is arranged in sequence along the axial direction of the armored layer, and the multiple rows of nozzles are uniformly arranged around the armored layer.
[0044] In another specific embodiment, the spray cooling unit can include at least one annular nozzle arranged in sequence along the movement direction of the armored layer, the armored layer and the core material both pass through the annular nozzle, and the annular nozzle sprays water to cool the armored layer.
[0045] Reference Figure 3 In a specific embodiment, the cooling system 40 includes an immersion cooling unit, which includes a box body 41, two or more partitions 42 are arranged in the box body 41 and spaced apart along the movement direction of the armored layer, the partitions 42 contain cooling water between the partitions 42, the box body 41 and each partition 42 are provided with a through hole 43 for the product to pass through, and the product passes through the inside of the cooling water and then enters the diameter-reducing die 30 for diameter reduction.
[0046] Further preferably, the diameter-reducing die 30 is arranged on the partition 42, the diameter-reducing die 30 is located below the cooling liquid level, the product is cooled and diameter-reduced at the same time, and the cooling water also cools the diameter-reducing die 30. The number of diameter-reducing dies 30 can be two or more, and each diameter-reducing die 30 is arranged on a different partition 42.
[0047] Specifically, in this embodiment, the box body 41 includes a first end plate 44 and a second end plate 45 arranged oppositely, each partition 42 is located between the first end plate 44 and the second end plate 45, the space between the first end plate 44 and the partition 42 adjacent to the first end plate 44 is a first drainage cavity 46, the first drainage cavity 46 is provided with a first drainage port 47, the space between the second end plate 45 and the partition 42 adjacent to the second end plate 45 is a second drainage cavity 48, and the second drainage cavity 48 is provided with a second drainage port 49.
[0048] In a specific embodiment, the cooling unit of the reducing-diameter die can be a refrigerant cooling unit, an air-cooled cooling unit, an electric cooling fin, or the like, or a combination of the above cooling units. The cooling unit of the reducing-diameter die cools the reducing-diameter die 30 and indirectly cools the armor layer 201.
[0049] In a specific embodiment, the number of reducing-diameter dies 30 is two or more,
[0050] The number of reducing-diameter dies 30 is at least one, and in a specific embodiment, the number of reducing-diameter dies 30 is two or more, specifically 2, 3, 4, 5, or the like. The reducing-diameter dies 30 are coaxially arranged in sequence in the direction of the core axis, and sequentially reduce the diameter of the armor conductive member precursor. The multiple reducing-diameter dies 30 are used to reduce the diameter in multiple passes, which not only reduces the deformation amount in a single pass, reduces surface scratches or cracks, and improves the surface finish, but also facilitates the preparation of a profiled armor layer structure, gradually corrects local deformation errors, improves the dimensional control accuracy of the corners and grooves of the profiled structure, and thus improves the overall dimensional accuracy of the product.
[0051] The method for preparing the armored conductive member 300 using the device of the present application includes the following processes:
[0052] 1) A coated core material 100 is provided.
[0053] 2) The armor blank 200 is continuously extruded by a continuous extruder to obtain an armor extruded material.
[0054] 3) An extrusion die 20 is provided, the armor extruded material is extruded from the extrusion cavity to form an armor layer 201, the coated core material 100 passes through the through hole 23 and penetrates into the formed armor layer 201 to obtain an armored conductive member precursor, in which the coated core material 100 is suspended in the armor layer 201, and the first gap 202 is formed between the coated core material 100 and the armor layer 201.
[0055] 4) A reducing-diameter die 30 is provided, and the armored conductive member precursor is reduced in diameter by the reducing-diameter die 30. In the reducing-diameter process, the outer dimension of the armor layer 201 is reduced, and the first gap 202 is reduced to a second gap, to obtain the armored conductive member 300.
[0056] The technical scheme is formed by the improved continuous extrusion coating method. The existing continuous extrusion coating method is to directly coat the continuous extrusion coating layer on the core passing through the through hole of the mold core, however, the high-temperature semi-melt extrusion material is directly coated on the insulation layer, which will burn the insulation layer. The utility model improves the existing continuous extrusion coating method: the first gap 202 between the core material 100 and the continuous extrusion formed closed ring armor layer 201 is kept at a safe distance, and the first gap 202 is gradually reduced to the second gap by the reducing die 30, so that the temperature of the armor layer 201 is gradually reduced, and the insulation layer is protected.
[0057] In a specific embodiment, the armored extrusion material is obtained by simultaneously continuously extruding two or more armored blanks 200, further improving the production efficiency. Specifically, the extrusion wheel 11 is provided with two or more extrusion wheel grooves arranged in sequence and side by side, and each armored blank 200 is respectively conveyed to each extrusion wheel groove for simultaneous continuous extrusion. The extrusion wheel shoe 12 is provided with a plug 13 corresponding to the position of each extrusion wheel groove. Each extrusion wheel groove corresponds to an independent extrusion cavity and a die orifice, and each die orifice is connected with the extrusion cavity. The armored layer 201 extruded from each die orifice flows into the annular extrusion cavity.
[0058] The above-mentioned embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the application patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.
Claims
1. A continuous extrusion coating device, characterized in that, include: A continuous extrusion press includes an extrusion roller and an extrusion roller shoe. The extrusion roller has an extrusion roller groove, and the extrusion roller shoe has a plug at a position corresponding to the extrusion roller groove. The extrusion roller groove, the plug, and the extrusion roller shoe constitute an extrusion cavity. The extrusion cavity has a die opening. The continuous extrusion press is used for continuously extruding armored billets. An extrusion die is connected to an extrusion roller. The extrusion die includes a core and an outer die. The core has an axial through hole for the core material to be coated to pass through. The outer die is fitted over the core. An annular extrusion cavity is provided between the outer die and the core. The extrusion cavity is connected to the die opening. The extension direction of the outlet of the extrusion cavity is parallel to the axis of the core. There is a gap between the outlet of the extrusion cavity and the through hole. The extrusion cavity is used to form a spaced armor layer on the core material to be coated, thereby obtaining an armored conductive component precursor. as well as A diameter reduction die is provided, located behind the extrusion die. The armored conductive component precursor enters the diameter reduction die, and the diameter reduction die reduces the diameter of the armor layer.
2. The continuous extrusion coating equipment according to claim 1, characterized in that, A first sizing belt is provided at the outlet of the extrusion cavity, and the length extension direction of the first sizing belt is parallel to the axis of the die core.
3. The continuous extrusion coating equipment according to claim 2, characterized in that, The length of the first sizing belt is 1mm to 10mm.
4. The continuous extrusion coating equipment according to claim 1, characterized in that, The diameter reduction die is provided with an axial extrusion cavity. The inlet size of the extrusion cavity is larger than the outer contour size of the armored conductive component precursor, and the outlet size of the extrusion cavity is smaller than the outer contour size of the armored conductive component precursor.
5. The continuous extrusion coating equipment according to claim 4, characterized in that, A second sizing band is provided at the outlet of the extrusion chamber.
6. The continuous extrusion coating equipment according to claim 1, characterized in that, It also includes a cooling system disposed between the outlet of the extrusion chamber and the outlet of the reduction die.
7. The continuous extrusion coating equipment according to claim 6, characterized in that, The cooling system includes an online cooling unit and / or a diameter reduction mold cooling unit; The online cooling unit is disposed between the extrusion die and the reduction die; The diameter reduction mold cooling unit cools the diameter reduction mold.
8. The continuous extrusion coating equipment according to claim 6, characterized in that, The cooling system includes a housing, inside which two or more partitions are spaced apart along the length direction, and the diameter reduction mold is disposed on the partitions, with the diameter reduction mold located below the coolant surface.
9. The continuous extrusion coating equipment according to claim 1, characterized in that, The extrusion roller has two or more extrusion roller grooves arranged in parallel. The extrusion roller shoe is provided with a plug corresponding to the position of each extrusion roller groove. Each extrusion roller groove corresponds to an independent extrusion cavity and a die orifice. Each die orifice is connected to the extrusion cavity.
10. The continuous extrusion coating equipment according to any one of claims 1 to 9, characterized in that, The number of the diameter reduction molds is two or more, and each of the diameter reduction molds is arranged coaxially in sequence along the axis of the mold core.