Non-deformation high-strength high-precision windscreen wiper steel bar and machining production equipment

Abstract

The invention discloses a non-deformation high-strength high-precision windscreen wiper steel bar and machining production equipment, the non-deformation high-strength high-precision windscreen wiper steel bar comprises a windscreen wiper steel bar, the windscreen wiper steel bar comprises a high-strength steel core main body, a lower elastic memory alloy layer and an upper elastic memory alloy layer, the lower elastic memory alloy layer and the upper elastic memory alloy layer respectively wrap the upper side and the lower side of the high-strength steel core main body, and the lower elastic memory alloy layer is riveted with the high-strength steel core main body and the upper elastic memory alloy layer. The carbon content of the steel core is accurately controlled, strength support is provided, the working stress of the windscreen wiper can be borne, and high strength and toughness are achieved. The elastic memory alloy layer has a shape memory effect and superelasticity, and can restore to the original shape after being deformed by external force, so that the deformation is reduced. The reinforcing ribs are arranged on the steel core, so that the bending strength and the torsional strength of the steel bar can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wiper steel bars, and in particular to a non-deformable, high-strength, high-precision wiper steel bar and processing and production equipment. Background Art

[0002] The wiper blade is the core supporting component of the wiper blade and plays a key role in its performance. It is usually made of carbon steel SK-5 or high carbon steel, and has high strength, high hardness, good toughness and elasticity.

[0003] Its functions are mainly reflected in two aspects: one is to provide stable support so that the wipers can stick to the windshield, ensuring even pressure distribution, reducing water marks and scratches, and improving wiping effect; the second is to adapt to the curvature of the glass. The boneless wiper steel blade uses a whole force-conducting steel strip to disperse pressure, which can adapt to the curvature of the glass of different models and allow the rubber strip to fit the glass surface completely.

[0004] To enhance performance, the steel strips undergo electroplating and other treatments to improve rust resistance. During wiper operation, the steel strips are subjected to high-frequency oscillations every minute. Poor quality materials can easily cause plastic deformation, resulting in incomplete scraping. Therefore, high-quality wiper steel strips should be resistant to deformation and have a long service life to ensure stable wiper operation in all conditions, providing the driver with a clear field of view and ensuring driving safety.

[0005] However, existing wiper steel strips often suffer from deformation, insufficient strength, and inaccurate precision during use. Deformation can impair the wiper's fit to the windshield, resulting in poor wiper coverage and streaking. Insufficient strength can easily cause the strip to break or permanently deform under stress. Insufficient precision can also affect the smooth movement of the wiper, causing vibration and unusual noise. These issues not only affect the driving experience but also pose a potential threat to driving safety.

[0006] Therefore, it is very necessary to invent a non-deformable high-strength and high-precision wiper steel bar and processing and production equipment. Summary of the Invention

[0007] The present invention aims to provide a non-deformable, high-strength, high-precision wiper steel bar and its processing equipment to address the problems of deformation, insufficient strength, and insufficient precision that often occur with existing wiper steel bars during use. Deformation can lead to poor wiper-to-windshield contact, resulting in poor wiper adhesion and water streaking; insufficient strength can easily cause the steel bar to break or permanently deform under stress; and insufficient precision can affect the smooth movement of the wiper, causing vibration and unusual noise.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a non-deformable high-strength and high-precision wiper steel bar: comprising a wiper steel bar, wherein: the wiper steel bar comprises a high-strength steel core body, a lower elastic memory alloy layer and an upper elastic memory alloy layer, the lower elastic memory alloy layer and the upper elastic memory alloy layer are respectively wrapped on the upper and lower sides of the high-strength steel core body, and the lower elastic memory alloy layer is riveted together with the high-strength steel core body and the upper elastic memory alloy layer.

[0009] The high-strength steel core body is provided with a slot and several rivet holes from the upper surface to the lower surface. The several rivet holes are grouped into two and are distributed in a mirror-image position on both sides of the slot. The high-strength steel core body is riveted together with the lower elastic memory alloy layer through the rivet holes.

[0010] The surfaces of the lower elastic memory alloy layer and the upper elastic memory alloy layer are each provided with a U-shaped groove, and the U-shaped groove is fixedly installed in the reinforcing rib. The reinforcing rib and the corresponding U-shaped groove form a mountain shape. The U-shaped groove on the lower elastic memory alloy layer opens downward, and the U-shaped groove on the upper elastic memory alloy layer opens upward. The bottom of the U-shaped groove on the lower elastic memory alloy layer is in close contact with the bottom of the U-shaped groove on the upper elastic memory alloy layer, and forms a cross shape with the reinforcing rib. The bottom of the U-shaped groove on the lower elastic memory alloy layer and the bottom of the U-shaped groove on the upper elastic memory alloy layer are both in the slot hole.

[0011] The upper elastic memory alloy layer is provided with a plurality of second rivet holes corresponding to the first rivet holes, which are evenly distributed on both sides of the U-shaped groove. The upper elastic memory alloy layer is riveted to the lower elastic memory alloy layer through the second rivet holes.

[0012] A plurality of memory rivet columns corresponding to rivet hole one are evenly arranged on the side surface of the lower elastic memory alloy layer opposite to the U-shaped groove opening. The other end of each memory rivet column is provided with an integrated memory flat head. The memory rivet column is inserted into the corresponding rivet hole one and rivet hole two, and the memory flat head leaks out of the rivet hole two. The memory rivet column and the memory flat head are riveted together with the high-strength steel core body and the upper elastic memory alloy layer through a heating device.

[0013] The present invention also relates to a non-deformable, high-strength, and high-precision wiper steel bar processing and production equipment, including a heating device, the heating device including a processing table, an annular electric rotating table, an assembly seat, a gantry, a control box, an electric push rod and a heating cover, the heating device including a processing table with an annular cavity on the upper surface, the annular electric rotating table is installed in the annular cavity, the output end of the annular electric rotating table is evenly fixed with a plurality of assembly seats, each of the assembly seats is provided with an assembly cavity matching the wiper steel bar, a gantry is fixedly installed on the processing table, the gantry is fixed across the annular cavity, a control box is fixedly installed above the gantry beam, an electric push rod is fixedly installed below the gantry beam, the output end of the electric push rod is fixedly connected to the heating cover, the heating cover is electrically connected to the heating system inside the control box through a control line, and a key box is fixedly installed on one side of the processing table.

[0014] The control line is a spiral elastic line.

[0015] The heating cover is provided with a heating point corresponding to the memory flat head. The heating point adopts a heating wire inside, and the heating wire is electrically connected through the heating system inside the control line.

[0016] The button box is fixedly provided with buttons for controlling the operation of the annular electric rotating table, the electric push rod and the heating system.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes a holistic design to rapidly rivet the high-strength steel core, lower elastic memory alloy layer, and upper elastic memory alloy layer together, ensuring the entire wiper strip maintains high strength and excellent toughness during use. Its carbon content is precisely controlled to ensure the steel core is less susceptible to fracture or plastic deformation when subjected to significant external forces. The high-strength steel core provides the fundamental strength support for the entire wiper strip, enabling it to withstand the various stresses encountered during wiper operation. The elastic memory alloy layer has a unique shape memory effect and superelasticity. When the steel bar is deformed by external force, the elastic memory alloy layer can restore the steel bar to its original shape as much as possible through its own elastic recovery force, effectively reducing the deformation of the steel bar and improving the steel bar's anti-deformation ability.

[0018] The reinforcing ribs increase the bending and torsional strength of the steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the wiper steel bar structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the exploded structure of the wiper steel bar of the present invention.

[0021] Figure 3 It is a schematic diagram of the partial cutaway end surface structure of the wiper steel bar of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the heating equipment of the present invention.

[0023] Figure 5 It is a schematic diagram of the exploded structure of the assembly seat, wiper steel bar and heating cover of the present invention.

[0024] Figure 6 It is a schematic diagram of the partially enlarged structure of point A of the present invention.

[0025] Figure 7 It is a schematic diagram of the partially enlarged structure of point B of the present invention.

[0026] In the picture: High-strength steel core body 1, lower elastic memory alloy layer 2, upper elastic memory alloy layer 3, slot hole 4, rivet hole 1 5, rivet hole 2 6, memory rivet column 7, memory flat head 8, U-shaped groove 9, reinforcing rib 10, processing table 11, annular cavity 12, annular electric rotating table 13, assembly seat 14, assembly cavity 15, gantry 16, control box 17, electric push rod 18, heating cover 19, control line 20, heating point 21, key box 22, key 23. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Implementation column: As attached Figure 1-7 shown The present invention provides a non-deformable high-strength and high-precision wiper steel bar, including a wiper steel bar, wherein: the wiper steel bar includes a high-strength steel core body 1, a lower elastic memory alloy layer 2, and an upper elastic memory alloy layer 3, the lower elastic memory alloy layer 2 and the upper elastic memory alloy layer 3 are respectively wrapped around the upper and lower sides of the high-strength steel core body 1, the lower elastic memory alloy layer 2 is riveted to the high-strength steel core body 1 and the upper elastic memory alloy layer 3, so that a good bond is formed between the elastic memory alloy layer and the high-strength steel core body 1, and the elastic memory alloy has a unique shape memory effect and superelasticity. When the steel bar is deformed by an external force, the elastic memory alloy layer can restore the steel bar to its original shape as much as possible through its own elastic restoring force, thereby effectively reducing the deformation of the steel bar and improving the steel bar's anti-deformation ability; The high-strength steel core body 1 adopts SK5 high-carbon steel core, whose carbon content is controlled between 0.8% and 1.0%, ensuring the steel bar has high strength and good toughness. The surface is wrapped with a natural rubber layer with a thickness of 0.5-1.0mm, providing excellent wear resistance and anti-aging performance; The lower elastic memory alloy layer 2 and the upper elastic memory alloy layer 3 are made of nickel-titanium based memory alloy, with a nickel (Ni) content of 50%-51% (atomic percentage) and a titanium (Ti) content of 49%-50%. A small amount of chromium and other elements can be added to optimize performance. The thickness of the lower elastic memory alloy layer 2 and the upper elastic memory alloy layer 3 is within the range of 0.1 mm to 1 mm, and can be adjusted according to factors such as the size of the steel core body and the required deformation resistance.

[0029] Specifically, the high-strength steel core body 1 is provided with a slot 4 and a plurality of rivet holes 5 from the upper surface to the lower surface. The plurality of rivet holes 5 form a group of two and are distributed in mirror-image positions on both sides of the slot 4. The high-strength steel core body 1 is riveted to the lower elastic memory alloy layer 2 through the rivet holes 5. The arrangement of the slots 4 not only releases the stress inside the steel bar, reduces deformation and fracture caused by stress concentration, and improves the stability and reliability of the steel bar, but also provides the required space for the high-strength steel core body 1 to be combined with the lower elastic memory alloy layer 2 and the upper elastic memory alloy layer 3, thereby ensuring the strength and stability of the combined structure.

[0030] Specifically, the surface of the lower elastic memory alloy layer 2 and the upper elastic memory alloy layer 3 are each provided with a U-shaped groove 9, so that the stress inside the lower elastic memory alloy layer 2 and the upper elastic memory alloy layer 3 can be released through the U-shaped groove 9, thereby reducing the deformation and fracture caused by stress concentration, and improving the stability and reliability of the lower elastic memory alloy layer 2 and the upper elastic memory alloy layer 3. The U-shaped groove 9 is fixedly installed in the reinforcing rib 10, and the reinforcing rib 10 and the corresponding U-shaped groove 9 form a mountain shape. The U-shaped groove 9 on the lower elastic memory alloy layer 2 is open. Facing downward, the U-shaped groove 9 on the upper elastic memory alloy layer 3 opens upward, the bottom of the U-shaped groove 9 on the lower elastic memory alloy layer 2 is in close contact with the bottom of the U-shaped groove 9 on the upper elastic memory alloy layer 3, and forms a cross shape with the reinforcing rib 10 to improve the bending strength and torsional strength of the wiper steel bar. The reinforcing rib 10 is integrally formed with the lower elastic memory alloy layer 2 to ensure the integrity and stability of the structure. The bottom of the U-shaped groove 9 on the lower elastic memory alloy layer 2 and the bottom of the U-shaped groove 9 on the upper elastic memory alloy layer 3 are both in the slot 4.

[0031] Specifically, a plurality of rivet holes 6 corresponding to the rivet holes 5 are opened through the surface of the upper elastic memory alloy layer 3 , and the rivet holes 6 are evenly distributed on both sides of the U-shaped groove 9 . The upper elastic memory alloy layer 3 is riveted to the lower elastic memory alloy layer 2 through the rivet holes 6 .

[0032] Specifically, a plurality of memory rivet columns 7 corresponding to the rivet holes 1 5 are evenly arranged on the side surface of the lower elastic memory alloy layer 2 opposite to the opening of the U-shaped groove 9. The other end of each memory rivet column 7 is provided with an integrated memory flat head 8. The memory rivet column 7 is inserted into the corresponding rivet hole 1 5 and the rivet hole 2 6. The memory flat head 8 leaks out of the rivet hole 2 6. The memory rivet column 7 and the memory flat head 8 are riveted together with the high-strength steel core body 1 and the upper elastic memory alloy layer 3 through a heating device. The diameter of the memory flat head 8 in the original state is larger than the diameters of the rivet hole 1 5 and the rivet hole 2 6; At low temperature, external force is applied to the memory rivet column 7 and the memory flat head 8 to produce plastic deformation, and then they are quickly inserted into the rivet hole 1 5 and the rivet hole 2 6, and the memory flat head 8 is made to leak out of the rivet hole 2 6. Then, the memory rivet column 7 and the memory flat head 8 are heated to above the transformation temperature, and the originally compressed and deformed parts automatically recover to their original shapes, thereby firmly riveting the lower elastic memory alloy layer 2 to the high-strength steel core body 1 and the upper elastic memory alloy layer 3 together.

[0033] The present invention also relates to a non-deformable high-strength and high-precision wiper steel bar processing and production equipment, including a heating device, the heating device includes a processing table 11, an annular electric rotating table 13, an assembly seat 14, a gantry 16, a control box 17, an electric push rod 18 and a heating cover 19, the heating device includes a processing table 11 having an annular cavity 12 on the upper surface, the annular electric rotating table 13 is installed in the annular cavity 12, the output end of the annular electric rotating table 13 is evenly fixed with a plurality of assembly seats 14, each assembly seat 14 There are assembly cavities 15 on each of the two plates that match the wiper steel bars. A gantry 16 is fixedly mounted on the processing table 11. The gantry 16 is fixed across the annular cavity 12. A control box 17 is fixedly mounted above the crossbeam of the gantry 16. An electric push rod 18 is fixedly mounted below the crossbeam of the gantry 16. The output end of the electric push rod 18 is fixedly connected to the heating cover 19. The heating cover 19 is electrically connected to the heating system inside the control box 17 through a control line 20. A key box 22 is fixedly mounted on one side of the processing table 11. It should be noted that the heating cover 19 is located on the moving route of each assembly seat 14, and under the control of the PLC controller, each time the annular electric rotating table 13 rotates once and stops, there is always an assembly seat 14 below the heating cover 19.

[0034] Specifically, the control line 20 is a spiral elastic line, so as not to break during the movement of the heating cover 19 and not to affect the up and down movement of the heating cover 19 .

[0035] Specifically, a heating point 21 corresponding to the memory flat head 8 is provided on the heating cover 19 . An electric heating wire is used inside the heating point 21 , and the electric heating wire is electrically connected to the heating system inside the control line 20 .

[0036] Specifically, the button box 22 is fixed with buttons 23 for controlling the operation of the annular electric rotating table 13, the electric push rod 18 and the heating system; The button 23 is electrically connected to the annular electric rotating table 13, the electric push rod 18 and the heating system through the PLC controller; The button 23 is connected to the input terminal of the PLC controller, and the annular electric rotating table 13, the electric push rod 18 and the heating system are connected to the output terminal of the PLC controller; The PLC controller is fixedly installed inside the control box 17 , and the wiring harness between the button 23 and the PLC controller is routed along the outside of the processing table 11 and the gantry 16 .

[0037] In this embodiment: During use, external force is applied to the memory rivet column 7 and the memory flat head 8 at low temperature to produce plastic deformation, and then the column is quickly inserted into the rivet hole 1 5 and the rivet hole 2 6, and the memory flat head 8 is allowed to leak out of the rivet hole 2 6, so that the lower elastic memory alloy layer 2 is superimposed on the high-strength steel core body 1 and the upper elastic memory alloy layer 3, and placed in the assembly cavity 15 of the corresponding assembly seat 14. The assembly seat 14 carrying the stacked wiper steel strips is driven by the annular electric rotating table 13 to move to the bottom of the heating cover 19 and stop rotating; Then, the electric push rod 18 drives the heating cover 19 to close the mold with the assembly base 14, and the heating wire in the heating point 21 heats the memory rivet column 7 and the memory flat head 8. After a certain heating time (the time is controlled by the PLC controller), the memory rivet column 7 and the memory flat head 8 are restored to their original state, so that the lower elastic memory alloy layer 2 is riveted to the high-strength steel core body 1 and the upper elastic memory alloy layer 3. At the same time, the electric push rod 18 drives the heating cover 19 to separate from the assembly base 14. At this time, continue to let the annular electric rotating table 13 drive the assembly seat 14 to carry the stacked wiper steel strips to move to the bottom of the heating cover 19, and stop rotating, and then rivet in the above manner; The wiper steel strip processed like this will be moved out from below the heating cover 19 and then taken out.

[0038] All kinds of components used in this application document are standard parts. The specific connection methods of each part adopt mature conventional means such as threads, bolts, nesting, etc. in the existing technology. Each structure adopts conventional materials in the existing technology and will not be described in detail here.

[0039] In summary, this non-deformable, high-strength, high-precision wiper steel strip and its processing and production equipment, through its integrated configuration, is capable of rapidly riveting together the high-strength steel core, the lower elastic memory alloy layer, and the upper elastic memory alloy layer, ensuring that the entire wiper steel strip possesses both high strength and excellent toughness during use. Its carbon content is precisely controlled to ensure that the steel core is less susceptible to fracture or plastic deformation when subjected to significant external forces. The high-strength steel core provides the fundamental strength support for the entire wiper steel strip, enabling it to withstand the various stresses encountered during wiper operation. The elastic memory alloy layer has a unique shape memory effect and superelasticity. When the steel bar is deformed by external force, the elastic memory alloy layer can restore the steel bar to its original shape as much as possible through its own elastic recovery force, effectively reducing the deformation of the steel bar and improving the steel bar's anti-deformation ability.

[0040] The reinforcing ribs increase the bending and torsional strength of the steel bars.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A non-deformable, high-strength, high-precision wiper steel strip, characterized by: The wiper steel strip comprises a high-strength steel core body (1), a lower elastic memory alloy layer (2) and an upper elastic memory alloy layer (3); the lower elastic memory alloy layer (2) and the upper elastic memory alloy layer (3) are respectively wrapped around the upper and lower sides of the high-strength steel core body (1); and the lower elastic memory alloy layer (2) is riveted together with the high-strength steel core body (1) and the upper elastic memory alloy layer (3).

2. The non-deformable, high-strength, high-precision wiper steel strip according to claim 1, characterized in that: The high-strength steel core body (1) is provided with a slot (4) and a plurality of rivet holes (5) extending from the upper surface to the lower surface. The plurality of rivet holes (5) are grouped in pairs and are distributed on both sides of the slot (4) in a mirror-image manner. The high-strength steel core body (1) is riveted to the lower elastic memory alloy layer (2) through the rivet holes (5).

3. The non-deformable, high-strength, high-precision wiper steel strip according to claim 2, characterized in that: The surfaces of the lower elastic memory alloy layer (2) and the upper elastic memory alloy layer (3) are each provided with a U-shaped groove (9), and a reinforcing rib (10) is fixedly installed in the U-shaped groove (9), and a mountain shape is formed between the reinforcing rib (10) and the corresponding U-shaped groove (9). The U-shaped groove (9) on the lower elastic memory alloy layer (2) opens downward, and the U-shaped groove (9) on the upper elastic memory alloy layer (3) opens upward. The bottom of the U-shaped groove (9) on the lower elastic memory alloy layer (2) is in close contact with the bottom of the U-shaped groove (9) on the upper elastic memory alloy layer (3), and forms a cross shape with the reinforcing rib (10). The bottom of the U-shaped groove (9) on the lower elastic memory alloy layer (2) and the bottom of the U-shaped groove (9) on the upper elastic memory alloy layer (3) are both in the slot hole (4).

4. The non-deformable, high-strength, high-precision wiper steel strip according to claim 3, characterized in that: The surface of the upper elastic memory alloy layer (3) is provided with a plurality of second rivet holes (6) corresponding to the first rivet holes (5), and the second rivet holes (6) are evenly distributed on both sides of the U-shaped groove (9). The upper elastic memory alloy layer (3) is riveted to the lower elastic memory alloy layer (2) through the second rivet holes (6).

5. The non-deformable, high-strength, high-precision wiper steel strip according to claim 4, characterized in that: A plurality of memory rivet columns (7) corresponding to the first rivet hole (5) are evenly arranged on the side surface of the lower elastic memory alloy layer (2) opposite to the opening of the U-shaped groove (9), and the other end of each memory rivet column (7) is provided with an integrated memory flat head (8), the memory rivet column (7) is inserted into the corresponding first rivet hole (5) and the second rivet hole (6), and the memory flat head (8) leaks out of the second rivet hole (6), and the memory rivet column (7) and the memory flat head (8) are riveted together with the high-strength steel core body (1) and the upper elastic memory alloy layer (3) through a heating device.

6. The equipment for processing and producing non-deformable, high-strength, high-precision wiper steel strips according to claim 5, characterized in that: The heating device comprises a processing table (11), an annular electric rotating table (13), an assembly seat (14), a gantry (16), a control box (17), an electric push rod (18) and a heating cover (19), wherein the heating device comprises an annular cavity (12) formed on the upper surface of the processing table (11), the annular electric rotating table (13) is installed in the annular cavity (12), and a plurality of assembly seats (14) are evenly fixedly installed on the output end of the annular electric rotating table (13), and each assembly seat (14) is provided with an assembly cavity matching the wiper steel bar. (15), a gantry (16) is fixedly mounted on the processing table (11), the gantry (16) is fixed across the annular cavity (12), a control box (17) is fixedly mounted above the crossbeam of the gantry (16), an electric push rod (18) is fixedly mounted below the crossbeam of the gantry (16), an output end of the electric push rod (18) is fixedly connected to a heating cover (19), the heating cover (19) is electrically connected to the heating system inside the control box (17) through a control line (20), and a key box (22) is fixedly mounted on one side of the processing table (11).

7. The equipment for processing and producing non-deformable, high-strength, high-precision wiper steel strips according to claim 6, characterized in that: The control line (20) is a spiral elastic line.

8. The equipment for processing and producing non-deformable, high-strength, high-precision wiper steel strips according to claim 6, characterized in that: The heating cover (19) is provided with a heating point (21) corresponding to the memory flat head (8), and an electric heating wire is used inside the heating point (21), and the electric heating wire is electrically connected to the heating system inside the control line (20).

9. The equipment for processing and producing non-deformable, high-strength, high-precision wiper steel strips according to claim 6, characterized in that: The button box (22) is fixedly installed with buttons (23) for controlling the operation of the annular electric rotating table (13), the electric push rod (18) and the heating system.

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