High strength composite lightweight movable flat deck section of a carding machine

Abstract

The utility model discloses a high-strength composite light movable cover plate component of carding engine, including aluminium alloy base, the aluminium alloy base is fixed on cast iron cover plate skeleton through combination fastening structure, the aluminium alloy base lower end surface is fixed with steel needle cloth band through needle cloth edge clamp. The utility model's scheme can thoroughly eliminate the influence of thermal deformation, the expansion gap of sectional aluminium alloy base and elastic filler, structure glue can accommodate the thermal expansion amount of aluminium alloy completely, avoid the distortion problem of traditional all-aluminium alloy cover plate " upper end elongation, lower end shortening", thoroughly eliminate the arc deformation of steel needle cloth band, the elastic filler in expansion gap can effectively prevent the invasion of impurity.

Description

Technical Field

[0001] This utility model relates to the field of storage box technology, and in particular to a high-strength composite material lightweight movable cover plate component for a carding machine. Background Technology

[0002] In the cotton spinning production process, the carding machine plays a core pre-treatment role. By sequentially performing processes such as opening, uniform mixing, fine carding, and impurity removal on the cotton lap raw material, it bundles the raw material into regular cotton slivers and stores them in sliver cans, providing qualified semi-finished products for subsequent spinning stages. Among these components, the movable cover plate is a core key component for the carding machine to achieve carding and impurity removal functions, and its performance directly determines the carding quality and production efficiency.

[0003] Currently, the movable cover plates of carding machines in the industry are mainly divided into two structural types: all-cast and all-aluminum alloy. However, both types of structures have obvious technical shortcomings in practical applications: The thermal deformation problem of the all-aluminum alloy movable cover plate: Its standard structure consists of an aluminum alloy cover plate skeleton, a needle cloth edge clamp, and a steel needle cloth belt. The steel needle cloth belt is fixed to the lower end face of the aluminum alloy cover plate skeleton through the needle cloth edge clamp. Due to the significant difference in the coefficient of thermal expansion between aluminum alloy and steel (the coefficient of thermal expansion of aluminum alloy is more than twice that of steel), when the components are heated simultaneously during the carding process, the thermal deformation of the aluminum alloy cover plate skeleton will be more than twice that of the steel needle cloth belt and the needle cloth edge clamp combination. This causes the movable cover plate to exhibit a structural distortion of "elongation at the upper end and shortening at the lower end," causing the steel needle cloth belt to exhibit an arc-shaped deformation with low ends and high middle, directly resulting in unstable carding quality. Even when operating under constant temperature conditions, it can only slightly improve the quality stability and cannot fundamentally solve the thermal deformation problem. After long-term continuous production, the carding quality will still fluctuate significantly.

[0004] The weight and energy consumption issues of all-cast movable cover plates: While all-cast movable cover plates have the advantage of low thermal deformation and are less affected by temperature changes, with thermal deformation far lower than that of all-aluminum alloy structures, their inherent weight drawbacks are becoming increasingly apparent with the development trend of high-production carding machines (wider machine width and more movable cover plates). The weight of all-cast structures is relatively large, and with the increase in the number of cover plates and the expansion of machine width, the overall weight increases sharply. On the one hand, this leads to a significant increase in the contact friction between the movable cover plate and the heel / toe surface, accelerating component wear and shortening service life; on the other hand, it greatly increases the driving energy consumption of the carding machine, which contradicts the industry's development needs for energy conservation and emission reduction. Utility Model Content

[0005] To address the aforementioned technical problems, a lightweight movable cover plate component made of high-strength composite material for a carding machine is provided.

[0006] To achieve the above objectives, in a preferred embodiment of the present invention, the aluminum alloy base is fixed to the cast iron cover plate frame by a combined fastening structure, and a steel needle cloth strip is fixed to the lower end face of the aluminum alloy base by a needle cloth edge clamp.

[0007] In a preferred embodiment, the present invention may be further configured such that the aluminum alloy base has a mounting groove, and the mounting groove is connected to the corresponding protruding structure of the cast iron cover plate frame.

[0008] In a preferred embodiment, the present invention may be further configured such that the mounting groove is 12mm wide and 5mm deep.

[0009] In a preferred embodiment, the present invention may be further configured such that the combined fastening structure includes a modified epoxy structural adhesive and a high-strength bolt, wherein the modified epoxy structural adhesive is filled in the mounting groove, and the high-strength bolt passes through the aluminum alloy base and connects to the cast iron cover plate frame.

[0010] In a preferred embodiment, the modified epoxy structural adhesive may be further configured such that its filling thickness is 0.15-0.3 mm.

[0011] In a preferred embodiment, the present invention may be further configured such that the aluminum alloy base is provided with at least 3 sections, each section being 370mm long, 33.3mm wide, and 20mm high, and adjacent aluminum alloy bases are provided with expansion gaps of 2mm width, wherein a 1.8mm wide high-temperature resistant silicone strip is embedded in the expansion gaps.

[0012] In a preferred embodiment, the present invention may be further configured such that rectangular or rhomboid weight-reducing grooves are provided on both sides of the cast iron cover plate frame. The depth of the weight-reducing grooves is 2-2.5mm, the length × width of the rectangular weight-reducing grooves is 30-40mm × 20-30mm, and the side length of the rhomboid weight-reducing grooves is 25-35mm. Furthermore, the weight-reducing grooves are required to form a crisscrossing reinforcing rib structure, the width of the reinforcing ribs is 5-10mm, and the thickness is consistent with the side wall thickness of the cast iron cover plate frame.

[0013] Beneficial effects: This utility model discloses a high-strength composite material lightweight movable cover plate component for a carding machine. It completely eliminates the effects of thermal deformation. The expansion gaps, elastic fillers, and structural adhesive in the segmented aluminum alloy base can fully accommodate the thermal expansion of the aluminum alloy, avoiding the twisting problem of "upper elongation and lower shortening" in traditional all-aluminum alloy cover plates, and completely eliminating the arc-shaped deformation of the steel needle cloth. The weight-reducing groove design of the cast iron cover plate skeleton can reduce the skeleton weight by 20%-30%. Combined with the lightweight aluminum alloy base, the entire movable cover plate is 35%-45% lighter than a fully cast cover plate of the same specification. The structure is reliable and easy to maintain, achieving dual protection of "mechanical fixing + adhesive sealing," avoiding the risk of loosening during long-term operation. It facilitates the replacement and maintenance of individual bases, reducing later maintenance costs. The elastic filler in the expansion gaps effectively prevents impurities from entering. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a cross-sectional view of the present invention.

[0016] Figure 2 This is a schematic diagram of the expansion joint of this utility model.

[0017] Figure 3 This is a schematic diagram of the weight reduction groove of this utility model.

[0018] In the diagram, 1 is the cast iron frame cover plate; 2 is the aluminum alloy base; 3 is the high-strength bolt; 4 is the modified epoxy structural adhesive; 5 is the needle cloth edge clamp; 6 is the steel needle cloth bag; 7 is the mounting groove; 8 is the expansion gap; 9 is the elastic filler; 10 is the weight reduction groove; and 11 is the reinforcing rib. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-3 As shown, a high-strength composite material lightweight movable cover plate component for a carding machine includes an aluminum alloy base 2, which is fixed to a cast iron cover plate frame 1 by a combined fastening structure, and a steel needle cloth belt 6 is fixed to the lower end face of the aluminum alloy base 2 by a needle cloth edge clamp 5.

[0021] The aluminum alloy base 2 has a mounting groove 7, which mates with the corresponding protruding structure of the cast iron cover plate frame 1. The mounting groove 7 is 12mm wide and 5mm deep. The cast iron cover plate frame 1 is made of QT700 or higher grade ductile iron (such as QT800). QT700 ductile iron has a tensile strength ≥700MPa and a yield strength ≥550MPa, possessing high strength, high rigidity, and a low coefficient of thermal expansion (approximately 11×10⁻⁻⁻⁶). 6 The characteristic of (80-100℃) ensures that the movable cover plate does not deform significantly at working temperatures of 80-100℃, providing stable support for the overall structure.

[0022] The combined fastening structure includes modified epoxy structural adhesive 4 and high-strength bolts 3. The modified epoxy structural adhesive 4 is filled in the mounting groove 7. The high-strength bolts 3 penetrate the aluminum alloy base 2 and connect to the cast iron cover plate frame 1. M8 specification 304 stainless steel high-strength internal hex bolts (tensile strength 850MPa) are selected. One bolt is set every 100mm along the length of each section of aluminum alloy base, for a total of 5 bolts / section.

[0023] The modified epoxy structural adhesive 4 has a filling thickness of 0.15-0.3mm. The modified epoxy structural adhesive (model E-44, shear strength 25MPa, temperature resistance -40℃~+120℃) is filled into the installation groove, with an adhesive layer thickness of 0.2mm. The connection is completed after curing for 24 hours.

[0024] The aluminum alloy base 2 is provided with at least 3 sections, each section being 370mm long, 33.3mm wide, and 20mm high. Adjacent aluminum alloy bases 2 are provided with expansion gaps of 2mm width. A 1.8mm wide high-temperature resistant silicone strip is embedded in the expansion gap. The elastic filler in the expansion gap can effectively prevent impurities from entering and reduce the frequency of component cleaning.

[0025] The cast iron cover plate frame 1 has rectangular or rhomboid weight-reducing grooves on both sides. The depth of the weight-reducing grooves is 2-2.5mm. The length × width of the rectangular weight-reducing groove is 30-40mm × 20-30mm, and the side length of the rhomboid weight-reducing groove is 25-35mm. The weight-reducing grooves need to form a crisscrossing reinforcing rib structure. The width of the reinforcing ribs is 5-10mm, and the thickness is consistent with the side wall thickness of the cast iron cover plate frame 1. While reducing the weight of the frame, the reinforcing ribs compensate for the strength loss, ensuring that the bending strength of the cast iron cover plate frame 1 is ≥500MPa.

[0026] It should be noted that in this article, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities.

[0027] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A high-strength composite material lightweight movable cover plate component for a carding machine, characterized in that, It includes an aluminum alloy base (2), which is fixed to the cast iron cover plate frame (1) by a combination fastening structure. The lower end face of the aluminum alloy base (2) is fixed with a steel needle cloth strip (6) by a needle cloth edge clamp (5).

2. The high-strength composite material lightweight movable cover plate component for a carding machine according to claim 1, characterized in that, The aluminum alloy base (2) has a mounting groove (7), which is connected to the corresponding protruding structure of the cast iron cover plate frame (1).

3. A high-strength composite material lightweight movable cover plate component for a carding machine according to claim 2, characterized in that, The mounting groove (7) is 12mm wide and 5mm deep.

4. A high-strength composite material lightweight movable cover plate component for a carding machine according to claim 3, characterized in that, The combined fastening structure includes modified epoxy structural adhesive (4) and high-strength bolts (3). The modified epoxy structural adhesive (4) is filled in the mounting groove (7), and the high-strength bolts (3) pass through the aluminum alloy base (2) and are connected to the cast iron cover plate frame (1).

5. A high-strength composite material lightweight movable cover plate component for a carding machine according to claim 4, characterized in that, The filling thickness of the modified epoxy structural adhesive (4) is 0.15-0.3 mm.

6. A high-strength composite material lightweight movable cover plate component for a carding machine according to claim 5, characterized in that, The aluminum alloy base (2) is provided with at least 3 sections, each section being 370mm long, 33.3mm wide, and 20mm high. Adjacent aluminum alloy bases (2) are provided with expansion gaps of 2mm width, and 1.8mm wide high-temperature resistant silicone strips are embedded in the expansion gaps.

7. A high-strength composite material lightweight movable cover plate component for a carding machine according to claim 6, characterized in that, The cast iron cover plate skeleton (1) has rectangular or rhomboid weight-reducing grooves on both sides. The depth of the weight-reducing groove is 2-2.5mm. The length × width of the rectangular weight-reducing groove is 30-40mm × 20-30mm, and the side length of the rhomboid weight-reducing groove is 25-35mm. The weight-reducing grooves need to form a cross-shaped reinforcing rib structure. The width of the reinforcing rib is 5-10mm, and the thickness is the same as the side wall thickness of the cast iron cover plate skeleton (1).

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