A levelling steel plate structure for automotive parts and its manufacturing method

Abstract

The present invention relates to the technical field of automotive steel plates, and specifically relates to a flattenable steel plate structure for automotive parts and its manufacturing method. The steel plate body includes a base plate, a toughened steel plate, and a rubber layer. The base plate includes an upper base plate and a lower base plate, and the upper base plate and the lower base plate are symmetrically arranged. There are two toughened steel plates fixedly arranged, and the rubber layer is fixedly arranged between the two toughened steel plates. The toughened steel plates and the rubber layer are both arranged between the upper base plate and the lower base plate, and a fixing mechanism is penetrated through the steel plate body. The steel plate manufactured by the present invention has extremely high flexibility. When encountering bending, it can be quickly flattened without affecting the later use. At the same time, it has the characteristics of high strength and corrosion resistance. During the manufacturing process of the steel plate, a rubber layer with a certain thickness is added, which can further improve the toughness of the steel plate. At the same time, during the use of automotive parts, it also has a certain sound insulation effect, thus achieving the advantage of reducing the noise inside the vehicle.

Description

Technical Field

[0001] The present invention relates to a steel plate structure for automotive parts, and particularly to a flatable steel plate structure for automotive parts and a manufacturing method thereof, belonging to the technical field of automotive steel plates. Background Art

[0002] The body frame of an automobile is the basis for installing all parts. An automobile has a chassis, on which there are an engine, a transmission, wheels, a suspension, brakes, etc. Most automobiles adopt a load-bearing body, in which the girder and the car body are integrated. This kind of body is lighter in weight and higher in comfort.

[0003] Automotive parts, as the basis of the automotive industry, are necessary factors to support the sustainable and healthy development of the automotive industry. Especially in the current automotive industry, the vigorous and booming independent development and innovation require a strong parts system as a support. The independent brand and technological innovation of the whole vehicle need parts as the basis, and the independent innovation of parts has a strong driving force on the development of the whole vehicle industry. They influence and interact with each other.

[0004] Steel plates are one of the important components in automobile manufacturing. Steel plates are used in the manufacturing process of parts to achieve the overall assembly of the vehicle body and the protection of each component. The existing steel plates for manufacturing automotive parts;

[0005] Chinese Patent Application Publication No. CN102605250A discloses a steel plate for automobiles. The mass percentage of its chemical components is: C≤0.0015%; Si≤0.03%; Mn: 0.09%-0.15%; P≤0.010%; S≤0.010%; Alt: 0.020%-0.045%; Ti: 0.06%-0.08%; N≤0.004%; the balance is Fe and trace elements. The present invention also discloses a method for producing the steel plate for automobiles. The production method of the steel plate for automobiles provided by the present invention adjusts the chemical components, optimizes the hot rolling, cold rolling, annealing process parameters and tempering process parameters, and successfully produces a steel plate for automobiles with low yield and high plasticity. The steel plate produced by this method has the characteristics of low yield ratio and high formability, which can greatly reduce quality problems such as stamping wrinkling and cracking, and better meet the usage requirements of customers, bringing considerable economic benefits. However, the above invention still has the problems of low toughness and inability to be repeatedly leveled.

[0006] Therefore, it is urgent to improve automotive steel plates to solve the above existing problems. Summary of the Invention

[0007] The object of the present invention is to provide a flattenable steel plate structure for automotive parts and its manufacturing method. The steel plate manufactured by the present invention has extremely high flexibility. When encountering bending, it can be quickly flattened without affecting subsequent use. At the same time, it has the characteristics of high strength and corrosion resistance. During the manufacturing process of the steel plate, a rubber layer with a certain thickness is added, which can further improve the toughness of the steel plate. At the same time, during the use of automotive parts, it also has a certain sound insulation effect, thus achieving the advantage of reducing the noise inside the vehicle.

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] A flattenable steel plate structure for automotive parts, including a steel plate main body. The steel plate main body includes a base plate, a ductile steel plate, and a rubber layer. The base plate includes an upper base plate and a lower base plate. The upper base plate and the lower base plate are symmetrically arranged. There are two fixed ductile steel plates. The rubber layer is fixedly arranged between the two ductile steel plates. The ductile steel plate and the rubber layer are both arranged between the upper base plate and the lower base plate. A fixing mechanism is penetrated through the steel plate main body;

[0010] Through the above technical solution, the steel plate has extremely high flexibility. When encountering bending, it can be quickly flattened without affecting subsequent use. At the same time, it has the characteristics of high strength and corrosion resistance. During the manufacturing process of the steel plate, a rubber layer with a certain thickness is added, which can further improve the toughness of the steel plate. At the same time, during the use of automotive parts, it also has a certain sound insulation effect, thus achieving the advantage of reducing the noise inside the vehicle.

[0011] Preferably, a wrapping baffle is arranged on the outer side of the lower end surface of the upper base plate. The wrapping baffle is arranged in a circle on the outer side of the lower end surface of the upper base plate. A wrapping baffle is also arranged on the outer side of the upper end surface of the lower base plate. The wrapping baffle is arranged in a circle on the outer side of the upper end surface of the lower base plate. The wrapping baffle is used to wrap the ductile steel plate and the rubber layer;

[0012] Through the above technical solution, the rubber layer and the ductile steel plate can be wrapped inside, making the manufactured steel plate main body have higher fixing effect and aesthetics.

[0013] Preferably, a plurality of uniformly distributed triangular grooves are formed on the outer sides of the two ductile steel plates. Triangular protrusions adapted to the triangular grooves are arranged on the lower end surface of the upper base plate and the upper end surface of the lower base plate. The triangular protrusions are stuck into the triangular grooves;

[0014] Through the above technical solution, the fixing effect between the ductile steel plate and the base plate can be improved, and further the fusion fixing effect during the fusion of the steel plate main body can be improved, so that the steel plate main body will not be easily split.

[0015] Preferably, a first groove is formed on the surface of the upper substrate, a second groove is formed on the surface of the lower substrate, through holes are formed in the toughened steel plate close to the upper substrate, and through holes are also formed in the first groove. The two through holes communicate with each other. Threaded holes are formed in both the rubber layer and the toughened steel plate close to the lower substrate, and threaded holes are also formed in the lower substrate. The three threaded holes communicate with each other. The threaded holes communicate with the through holes, and the threaded holes and the through holes are connected through the fixing mechanism.

[0016] Preferably, the fixing mechanism includes a first threaded rod and a second threaded rod. The second screw rod passes through the three threaded holes. An internal threaded groove is formed at the upper end of the second threaded rod. The first threaded rod is adapted to the internal threaded groove. The first threaded rod passes through the two through holes and is connected to the internal threaded groove. Two fixing mechanisms are symmetrically arranged on the left and right of the steel plate body;

[0017] Through the above technical solution, the fixing effect of the steel plate body can be further improved.

[0018] Preferably, both the upper substrate and the lower substrate are ordinary steel plates, and antirust paint is applied to the surfaces of the upper substrate and the lower substrate. The thicknesses of both the upper substrate and the lower substrate are 4 mm;

[0019] Through the above technical solution, the manufacturing cost of the steel plate body can be reduced. The application of the antirust paint can improve the corrosion resistance of the steel plate body. The setting of the 4-mm thickness does not affect the overall thickness of the steel plate body.

[0020] Preferably, the toughened steel plate is specifically an LG steel plate, and the thicknesses of the two toughened steel plates are both 2 mm;

[0021] Through the above technical solution, while improving the wear resistance of the steel plate body, it also has high toughness, further improving the toughness and strength of the steel plate body. The setting of the 2-mm thickness can ensure the excellent effect brought by the toughened steel plate without affecting the overall thickness of the steel plate body.

[0022] Preferably, the rubber layer is specifically a hard rubber layer, and the thickness of the rubber layer is 3 mm;

[0023] Through the above technical solution, while ensuring the toughness effect of the steel plate body, it will not greatly reduce the strength of the steel plate body. The setting of 3 mm neither affects the toughness effect brought by the rubber layer nor affects the overall thickness of the steel plate body.

[0024] A manufacturing method for a flattenable steel plate structure for automotive parts includes the following steps:

[0025] S1: Substrate production: Put ordinary steel plates into a furnace for melting until the steel plates are melted into a liquid state. Then pour the melted liquid into the prepared molds, and then cool and form them into the required upper substrate and lower substrate. After cooling, use equipment to groove and punch holes on the upper substrate and the lower substrate;

[0026] S2: Production of ductile steel plates: Cut and polish LG steel plates through equipment to the required thickness and size, and then perform hole punching and grooving treatments through equipment, waiting for assembly and pressing;

[0027] S3: Production of rubber layers: Select a certain amount of hard rubber and perform cutting and polishing treatments. Polish the rubber layer to the required size and thickness, and then perform hole punching through equipment, waiting for assembly and pressing;

[0028] S4: Assembly and pressing: Place the two processed ductile steel plates into the upper substrate and the lower substrate respectively. At this time, the triangular grooves and the triangular protrusions are in a clamped state. Then place the rubber layer between the two ductile steel plates, and perform assembly and pressing through a press. Then penetrate the second screw through the three threaded holes and tighten it. Then penetrate the first threaded rod through the two through holes, and turn the first threaded rod so that the first threaded rod rotates in the internal thread groove, further fixing the steel plate body. After the fixing is completed, put it into an oven for heating to fuse the various layers inside the steel plate body. The heating time is 1 hour. After heating, take it out and perform cooling and polishing.

[0029] The present invention has at least the following beneficial effects:

[0030] 1. The steel plate has extremely high flexibility. When encountering bending, it can be quickly leveled without affecting subsequent use. At the same time, it has the characteristics of high strength and corrosion resistance. During the production process of the steel plate, a rubber layer with a certain thickness is added, which can further improve the toughness of the steel plate. At the same time, during the use of automotive parts, it also has a certain sound insulation effect, thus achieving the advantage of reducing in-vehicle noise.

[0031] 2. After the steel plate body is assembled and pressed, penetrate the second screw through the three threaded holes and tighten it. Then penetrate the first threaded rod through the two through holes, and turn the first threaded rod so that the first threaded rod rotates in the internal thread groove, gradually pulling the two threaded rods closer, thereby further fixing and tightening the substrate, the ductile steel plate, and the rubber layer, and further improving the fixing effect of the steel plate body. Description of the Drawings

[0032] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0033] Figure 1 is an exploded cross-sectional view of the present invention;

[0034] Figure 2 is a cross-sectional view of the present invention;

[0035] Figure 3 is a schematic three-dimensional structure view of the present invention;

[0036] Figure 4 is a schematic three-dimensional structure view of the fixing mechanism of the present invention;

[0037] Figure 5 is an enlarged view of part A of the present invention.

[0038] In the figure, 1 is the main body of the steel plate, 101 is the substrate, 102 is the toughened steel plate, 103 is the rubber layer, 2 is the upper substrate, 201 is the first groove, 3 is the lower substrate, 301 is the second groove, 4 is the fixing mechanism, 401 is the first threaded rod, 402 is the second threaded rod, 403 is the internal thread groove, 5 is the wrapping baffle, 6 is the triangular groove, 7 is the triangular protrusion, 8 is the through hole, and 9 is the threaded hole. Detailed implementation manners

[0039] The following will be combined with the accompanying drawings and embodiments to detail the implementation manners of the present application, so as to fully understand the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects and implement accordingly.

[0040] As Figures 1-5 shown, the levelable steel plate structure for automotive parts and its manufacturing method provided in this embodiment include the main body of the steel plate 1. The main body of the steel plate 1 includes a substrate 101, a toughened steel plate 102, and a rubber layer 103. The substrate 101 includes an upper substrate 2 and a lower substrate 3. The upper substrate 2 and the lower substrate 3 are symmetrically arranged. There are two fixedly arranged toughened steel plates 102. The rubber layer 103 is fixedly arranged between the two toughened steel plates 102. The toughened steel plates 102 and the rubber layer 103 are both arranged between the upper substrate 2 and the lower substrate 3. A wrapping baffle 5 is arranged on the outer side of the lower end surface of the upper substrate 2. The wrapping baffle 3 is arranged in a circle on the outer side of the lower end surface of the upper substrate 2. A wrapping baffle 5 is also arranged on the outer side of the upper end surface of the lower substrate 3. The wrapping baffle 3 is arranged in a circle on the outer side of the upper end surface of the lower substrate 3. The wrapping baffle 5 is used to wrap the toughened steel plates 102 and the rubber layer 103. The arrangement of the wrapping baffle 5 can wrap the rubber layer 103 and the toughened steel plates 102 inside, making the produced main body of the steel plate have higher fixing effect and aesthetics;

[0041] On the outer sides of both of the two resilient steel plates 102, a plurality of uniformly distributed triangular grooves 6 are formed. On the lower end surface of the upper substrate 2 and the upper end surface of the lower substrate 3, triangular protrusions 7 adapted to the triangular grooves 6 are provided. The triangular protrusions 7 are snapped into the triangular grooves 6. The setting of the mutual snapping of the triangular grooves 6 and the triangular protrusions 7 can improve the fixing effect between the resilient steel plates 102 and the substrate 101, and further improve the fusion and fixing effect during the fusion of the steel plate body 1, so that the steel plate body 1 will not be easily split;

[0042] Both the upper substrate 2 and the lower substrate 3 are ordinary steel plates. Antirust paint is applied on the surfaces of the upper substrate 2 and the lower substrate 3. The thickness of both the upper substrate 2 and the lower substrate 3 is 4 mm. The use of ordinary steel plates can reduce the manufacturing cost of the steel plate body 1. The application of antirust paint can improve the corrosion resistance of the steel plate body 1. The setting of the 4-mm thickness does not affect the overall thickness of the steel plate body 1;

[0043] The resilient steel plate 102 is specifically an LG steel plate. The thickness of both of the two resilient steel plates 102 is 2 mm. The LG steel plate is a multi-purpose die steel with high hardness and excellent toughness. The heat treatment hardness is HRC56 - 58. While having high wear resistance, it has high toughness, which further improves the toughness and strength of the steel plate body 1. The setting of the 2-mm thickness can ensure the excellent effect brought by the resilient steel plate 102 without affecting the overall thickness of the steel plate body 1;

[0044] The rubber layer 103 is specifically a hard rubber layer. The thickness of the rubber layer 103 is 3 mm. The use of the hard rubber layer can ensure the toughness effect of the steel plate body 1 without greatly reducing the strength of the steel plate body 1. The setting of 3 mm neither affects the toughness effect brought by the rubber layer 103 nor affects the overall thickness of the steel plate body 1;

[0045] A fixing mechanism 4 is disposed through the main steel plate 1. A first groove 201 is formed on the surface of the upper substrate 2, and a second groove 301 is formed on the surface of the lower substrate 3. A through hole 8 is formed in the toughened steel plate 102 close to the upper substrate 2, and a through hole 8 is also formed in the first groove 201. The two through holes 8 communicate with each other. Threaded holes 9 are formed in both the rubber layer 103 and the toughened steel plate 103 close to the lower substrate 3, and threaded holes 9 are also formed in the lower substrate 3. The three threaded holes 9 communicate with each other. The threaded holes 9 communicate with the through holes 8, and the threaded holes 9 and the through holes 8 are connected through the fixing mechanism 4. The fixing mechanism 4 includes a first threaded rod 401 and a second threaded rod 402. The second threaded rod 402 passes through the three threaded holes 9. An internal thread groove 403 is formed at the upper end of the second threaded rod 402. The first threaded rod 401 is adapted to the internal thread groove 403. The first threaded rod 401 passes through the two through holes 8 and is connected to the internal thread groove 403. Two fixing mechanisms 4 are symmetrically arranged on the left and right of the main steel plate 1. After the main steel plate 1 is assembled and pressed, the second threaded rod 402 is passed through the three threaded holes 9 and tightened. Then the first threaded rod 401 is passed through the two through holes 8, and the first threaded rod 401 is rotated, so that the first threaded rod 401 rotates in the internal thread groove 403, and the two threaded rods are gradually pulled closer, so as to further fix and tighten the substrate 101, the toughened steel plate 102 and the rubber layer 103, and further improve the fixing effect of the main steel plate 1.

[0046] A manufacturing method of a flattenable steel plate structure for automotive parts includes the following steps:

[0047] S1: Substrate manufacturing: Put the ordinary steel plate into a furnace for melting until the steel plate is melted into a liquid, and then pour the melted liquid into the manufactured mold, and then cool and form the required upper substrate 2 and lower substrate 3. After cooling, the upper substrate 2 and the lower substrate 3 are grooved and punched through equipment;

[0048] S2: Toughened steel plate manufacturing: Cut and polish the LG steel plate through equipment to the required thickness and size, and then perform hole punching and grooving treatment through equipment, and wait for assembly and pressing;

[0049] S3: Rubber layer manufacturing: Select a certain amount of hard rubber, perform cutting and polishing treatment, polish the rubber layer 103 to the size and thickness, and then perform hole punching treatment through equipment, and wait for assembly and pressing;

[0050] S4: Assembly and pressing: Place the two processed ductile steel plates 102 into the upper substrate 2 and the lower substrate 3 respectively. At this time, the triangular grooves 6 and the triangular protrusions 7 are in a clamped state. Then place the rubber layer 103 between the two ductile steel plates 102, perform assembly and pressing through a press, then pass the second screw rod 402 through the three threaded holes 9 and tighten it. Pass the first threaded rod 401 through the two through holes 8, and turn the first threaded rod 401 so that the first threaded rod 401 rotates in the internal thread groove 403 to further fix the steel plate body 1. After the fixing is completed, put it into an oven for heating to fuse the various layers inside the steel plate body 1. The heating time is 1 hour. After heating, take it out and perform cooling and grinding.

[0051] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0052] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the element.

[0053] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be within the scope of the inventive concept described herein, through the above teachings or the technology or knowledge in the relevant field for modification. And the modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A levelable steel plate structure for automotive parts, comprising a steel plate body (1), characterized in that, The steel plate body (1) includes a base plate (101), a ductile steel plate (102), and a rubber layer (103). The base plate (101) includes an upper base plate (2) and a lower base plate (3). The upper base plate (2) and the lower base plate (3) are symmetrically arranged. There are two fixed ductile steel plates (102). The rubber layer (103) is fixedly arranged between the two ductile steel plates (102). The ductile steel plates (102) and the rubber layer (103) are both arranged between the upper base plate (2) and the lower base plate (3). A fixing mechanism (4) is penetrated through the steel plate body (1). A wrapping baffle (5) is arranged on the outer side of the lower end surface of the upper base plate (2). The wrapping baffle (5) is arranged in a circle on the outer side of the lower end surface of the upper base plate (2). A wrapping baffle (5) is also arranged on the outer side of the upper end surface of the lower base plate (3). The wrapping baffle (5) is arranged in a circle on the outer side of the upper end surface of the lower base plate (3). The wrapping baffle (5) is used to wrap the ductile steel plates (102) and the rubber layer (103). A number of uniformly distributed triangular grooves (6) are formed on the outer side surfaces of the two ductile steel plates (102). Triangular protrusions (7) adapted to the triangular grooves (6) are arranged on the lower end surface of the upper base plate (2) and the upper end surface of the lower base plate (3). The triangular protrusions (7) are inserted into the triangular grooves (6). A first groove (201) is formed on the surface of the upper base plate (2). A second groove (301) is formed on the surface of the lower base plate (3). Through holes (8) are formed on the ductile steel plate (102) close to the upper base plate (2), and through holes (8) are also formed in the first groove (201). The two through holes (8) are communicated. Threaded holes (9) are formed on the rubber layer (103) and the ductile steel plate (102) close to the lower base plate (3), and threaded holes (9) are also formed on the lower base plate (3). The three threaded holes (9) are communicated. The threaded holes (9) are communicated with the through holes (8). The threaded holes (9) and the through holes (8) are connected through the fixing mechanism (4). The fixing mechanism (4) includes a first threaded rod (401) and a second threaded rod (402). The second threaded rod (402) penetrates through the three threaded holes (9). An internal thread groove (403) is formed at the upper end of the second threaded rod (402). The first threaded rod (401) is adapted to the internal thread groove (403). The first threaded rod (401) penetrates through the two through holes (8) and is connected to the internal thread groove (403). Two fixing mechanisms (4) are symmetrically arranged on the left and right of the steel plate body (1); The manufacturing method of the leveling - capable steel plate structure for automotive parts includes the following steps: S1: Substrate production: Put a common steel plate into a furnace for smelting until the steel plate is melted into a liquid. Then pour the smelted liquid into the prepared mold, and then cool it to form the required upper substrate (2) and the lower substrate (3). After cooling, perform grooving and punching on the upper substrate (2) and the lower substrate (3) through equipment; S2: Production of toughened steel plate: Cut and polish the LG steel plate through equipment to the required thickness and size, and then perform punching and grooving treatment through equipment, and wait for assembly and pressing; S3: Production of rubber layer: Select a certain amount of hard rubber and perform cutting and polishing treatment. Polish the rubber layer (103) to the required size and thickness, and then perform punching treatment through equipment, and wait for assembly and pressing; S4: Assembly and pressing: Place the two processed toughened steel plates (102) into the upper substrate (2) and the lower substrate (3) respectively. At this time, the triangular groove (6) and the triangular protrusion (7) are in a clamped state. Then place the rubber layer (103) between the two toughened steel plates (102), and perform assembly and pressing through a press. Then penetrate the second threaded rod (402) into the three threaded holes (9) and tighten it. Then penetrate the first threaded rod (401) into the two through holes (8), and turn the first threaded rod (401) to make the first threaded rod (401) rotate in the internal thread groove (403) to further fix the steel plate body (1). After the fixation is completed, put it into an oven for heating to fuse the various layers inside the steel plate body (1). The heating time is 1 hour. After heating, take it out and perform cooling and polishing.

2. The leveling type steel plate structure for automotive parts according to claim 1, wherein: The upper substrate (2) and the lower substrate (3) are both common steel plates. The surfaces of the upper substrate (2) and the lower substrate (3) are both coated with anti-rust paint. The thicknesses of the upper substrate (2) and the lower substrate (3) are both 4 mm.

3. A leveling type steel plate structure for automotive parts according to claim 1, characterized in that: The toughened steel plate (102) is specifically an LG steel plate. The thicknesses of the two toughened steel plates (102) are both 2 mm.

4. A leveling - adjustable steel plate structure for automotive parts according to claim 1, characterized in that: The rubber layer (103) is specifically a hard rubber layer. The thickness of the rubber layer (103) is 3 mm.

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