A production device for springback press cold-rolled strip steel

Abstract

This application relates to a production apparatus for springback stamping of cold-rolled strip steel, belonging to the field of production apparatus for cold-rolled strip steel. It includes an uncoiler, with a laser processing component at the discharge end of the uncoiler for etching microgrooves on the strip surface. A cooling device is located downstream of the laser processing component, and a strip stamping machine is located downstream of the cooling device. A pressure sensor is installed in the strip stamping machine, and a winding device is also located downstream of the strip stamping machine. This application effectively reduces springback after stamping by using the laser processing component to etch microgrooves on the strip surface to form stress guiding points, and by using the cooling device to rapidly cool the strip, thus improving the dimensional and shape accuracy of the stamped strip and reducing the defect rate. The smooth uncoiling of the uncoiler, the rapid cooling of the cooling device, and the stable stamping of the strip stamping machine make the entire production process more efficient.

Description

Technical Field

[0001] This application relates to the technical field of production apparatus for cold-rolled strip steel, and in particular to a production apparatus for spring-loaded cold-rolled strip steel. Background Technology

[0002] Cold-rolled strip steel is widely used in automobile manufacturing, home appliance production, and precision instruments due to its uniform thickness, smooth surface, high dimensional accuracy, and excellent mechanical properties. In practical applications, cold-rolled strip steel often needs to be processed into specific shapes through stamping. However, the springback phenomenon after stamping is a key issue restricting its forming accuracy. Springback refers to the phenomenon where, after the strip steel undergoes plastic deformation under external force during stamping, the shape of the workpiece deviates from the die cavity due to the release of internal elastic stress after the external force is removed.

[0003] Currently, springback control of cold-rolled strip steel mainly relies on die optimization, stamping parameter adjustment, and subsequent forming processes. Die optimization counteracts springback by increasing compensation angles, but requires multiple trial adjustments, resulting in a long development cycle and applicability only to fixed-model products in mass production. While stamping parameter adjustment can reduce springback to some extent, its effect is limited. When the strip thickness exceeds 1.5mm, simply adjusting parameters is insufficient to control the springback within acceptable limits. The subsequent forming process uses specialized forming dies to perform secondary pressing on the stamped parts. Although this can correct springback, it increases process complexity, reduces production efficiency, and may cause surface scratches on the strip steel due to secondary stress. Utility Model Content

[0004] In order to effectively reduce the springback of stamped cold-rolled strip steel during the production process, this application provides a production apparatus for springback stamped cold-rolled strip steel.

[0005] The technical solution of the spring-loaded cold-rolled strip steel production apparatus provided in this application is as follows: A production apparatus for spring-loaded cold-rolled strip steel includes an uncoiler, a laser processing component at the discharge end of the uncoiler for etching microgrooves on the surface of the strip steel, a cooling device at the rear end of the laser processing component, a strip steel stamping machine at the rear end of the cooling device, a pressure sensor installed in the strip steel stamping machine, and a coiling device at the rear end of the strip steel stamping machine.

[0006] By adopting the above technical solutions, the uncoiler's equipment base provides a stable support foundation for the entire uncoiler structure, ensuring the stability of the equipment during operation. The mounting bracket is used to install the strip reel, enabling its stable rotation. The laser processing component is used to process the strip output from the uncoiler, etching V-shaped microgrooves on the strip surface. Pressure sensors installed in the strip stamping press can monitor pressure changes in real time during the stamping process. By monitoring the pressure, stamping parameters can be adjusted promptly, ensuring the stability and accuracy of the stamping process. Simultaneously, the data from the pressure sensor can also provide a basis for subsequent production quality control, helping to improve product consistency and yield. The coiling equipment is used to coil the stamped strip, facilitating its storage and transportation. The coiling process ensures the strip is neatly wound together, preventing it from scattering and being damaged.

[0007] Optionally, the uncoiler includes a base, a mounting frame, and a winding wheel. The mounting frame is vertically mounted on the upper surface of the base and is fixedly connected to the base. The winding wheel is located on the front surface of the mounting frame and is rotatably connected to the mounting frame.

[0008] By adopting the above technical solution, the uncoiler's base provides a stable support foundation for the entire uncoiling structure, ensuring the stability of the equipment during operation. The mounting frame is used to install the strip reel, enabling it to rotate stably. The strip reel can uncoil the coiled steel strip, facilitating subsequent processes. The rotating connection design between the strip reel and the mounting frame allows the steel strip to be smoothly output during the uncoiling process, reducing strip jamming and damage, and improving production efficiency.

[0009] Optionally, the microgrooves etched on the strip surface by the laser processing component are V-shaped, with a depth of 20-50 μm and a distance of 0.5-1 mm between the microgrooves, used to form stress guiding points.

[0010] By employing the above technical solution, the laser processing component etches V-shaped microgrooves on the surface of the strip steel. The microgrooves are 20-50 μm deep and 0.5-1 mm apart, forming stress guiding points. During the strip steel stamping process, stress is distributed and released along the direction of the microgrooves, avoiding springback caused by stress concentration. By precisely controlling the depth and spacing of the microgrooves, stress can be effectively guided, improving the dimensional and shape accuracy of the stamped strip steel.

[0011] Optionally, the cooling device includes an equipment box, a water supply assembly, and a spray plate assembly. The equipment box has a central slot, the water supply assembly is fixedly installed in the equipment box, and the spray plate assembly is symmetrically installed in the central slot.

[0012] By adopting the above technical solution, the equipment box of the cooling device provides installation space and protection for the entire cooling structure. The water tank in the water supply assembly is used to store coolant. The supply pump draws coolant from the water tank and delivers it to the spray plate assembly through the supply pipe. The spray plate assembly then performs spray cooling on the laser-etched strip steel.

[0013] Optionally, the equipment box includes a top box and support feet, the support feet being evenly installed at the four corners of the lower end face of the top box, and the support feet being fixedly connected to the top box.

[0014] By adopting the above technical solution, and by designing the equipment box as a structure in which the top box and the support feet cooperate, it is ensured that the top box can be stably placed on the ground during use, thus ensuring stability during cooling and processing.

[0015] Optionally, the water supply assembly includes a water storage tank and a liquid supply pump. The liquid supply pump is connected to the water storage tank via a suction pipe, and the outlet of the liquid supply pump is connected to the spray plate assembly via a liquid supply pipe.

[0016] By adopting the above technical solution, and by designing the water supply component as a structure that combines a water storage tank and a liquid supply pump, it is ensured that the coolant can be stored in the water storage tank for use, and that the coolant can be stably supplied to the spray plate assembly after being adsorbed by the liquid supply pump.

[0017] Optionally, the spray plate assembly includes a positioning rod and a liquid outlet plate. The liquid outlet plate is fixedly installed at the lower end of the positioning rod, and a plurality of atomizing spray holes are provided on the liquid outlet plate.

[0018] By adopting the above technical solution, the spray plate assembly has several atomizing nozzles on its outlet plate, which can spray the coolant onto the strip surface in an atomized form, enabling rapid cooling of the strip. Rapid cooling can change the internal structure of the strip, increase its hardness and strength, and further reduce the springback of the strip after stamping.

[0019] Optionally, the cooling device is vertically mounted with support frames at both ends, and a support roller is mounted at the head of the support frame, the support roller being rotatably connected to the support frame.

[0020] By adopting the above technical solution, the setting of the support frame and support rollers ensures the stable operation of the strip steel during the cooling process, avoids the strip steel from shaking and deforming, and ensures that the steel strip can stably pass between the upper and lower sets of liquid outlet plates, which facilitates better cooling processing.

[0021] In summary, this application includes at least one of the following beneficial technical effects: By using laser processing components to etch microgrooves on the strip surface to form stress guiding points, and employing a cooling device to rapidly cool the strip, this effectively reduces springback after stamping, improves the dimensional and shape accuracy of the stamped strip, and lowers the defect rate. The smooth uncoiling of the uncoiler, the rapid cooling of the cooling device, and the stable stamping of the strip stamping press make the entire production process more efficient. Simultaneously, real-time monitoring and adjustment of the pressure sensor ensures the stability of the stamping process, further improving production efficiency. The pressure sensor allows for real-time monitoring of pressure changes during the stamping process, providing a basis for production quality control. Through the analysis and processing of pressure data, problems in the production process can be identified and adjusted in a timely manner, ensuring the consistency and stability of product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0023] Figure 2 This is a perspective view of the unwinding machine in the embodiments of this application.

[0024] Figure 3 yes Figure 2 Front view of the device shown.

[0025] Figure 4 This is a perspective view of the cooling device in the embodiments of this application.

[0026] Figure 5 yes Figure 4 Rear view of the device shown.

[0027] Explanation of reference numerals in the attached drawings: 1. Uncoiler; 11. Equipment base; 12. Mounting frame; 13. Strip reel; 2. Laser processing assembly; 3. Cooling device; 31. Equipment box; 310. Middle tank; 311. Top box; 312. Support leg; 32. Water supply assembly; 321. Water storage tank; 322. Liquid supply pump; 33. Spray plate assembly; 331. Positioning rod; 332. Liquid outlet plate; 34. Support frame; 341. Support roller; 4. Strip stamping machine; 5. Rewinding equipment. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] This application discloses a production apparatus for spring-loaded cold-rolled strip steel. (Refer to...) Figure 1 , Figure 2 and Figure 4As shown, a production apparatus for spring-loaded cold-rolled strip steel includes an uncoiler 1. A laser processing component 2 is installed at the discharge end of the uncoiler 1. The laser processing component 2 is used to etch microgrooves on the surface of the strip steel. A cooling device 3 is installed at the rear end of the laser processing component 2. A strip steel stamping machine 4 is installed at the rear end of the cooling device 3. A pressure sensor is installed in the strip steel stamping machine 4, and a winding device 5 is also installed at the rear end of the strip steel stamping machine 4. The equipment base 11 of the uncoiler 1 provides a stable support foundation for the entire uncoiler structure, ensuring the stability of the equipment during operation. A mounting frame 12 is used to install the winding pulley 13, enabling it to rotate stably. The laser processing component 2 is used to process the strip steel output from the uncoiler 1, etching V-shaped microgrooves on the surface of the strip steel. The pressure sensor installed in the strip steel stamping machine 4 can monitor pressure changes in real time during the stamping process. By monitoring the pressure, stamping parameters can be adjusted in a timely manner, ensuring the stability and accuracy of the stamping process. Simultaneously, the data from the pressure sensor can also provide a basis for subsequent production quality control, helping to improve product consistency and pass rate. The coiling device 5 is used to coil the stamped strip steel, facilitating its storage and transportation. The coiling process ensures that the strip steel is neatly wound together, preventing it from becoming scattered and damaged.

[0030] The laser processing component 2 can be a fiber laser marking machine, such as the JPT-M100 model, with a laser power of 100W, which can meet the requirements for etching microgrooves on the surface of the strip steel. By adjusting the parameters of the laser marking machine, such as pulse frequency and pulse width, the depth and spacing of the microgrooves can be precisely controlled. During the etching process, the strip steel passes through the laser processing area at a certain speed to ensure the uniform distribution of the microgrooves. The equipment box 31 of the cooling device 3 can be made of stainless steel, such as 304 stainless steel, which has good corrosion resistance. The water storage tank 321 can be made of plastic, such as polyethylene plastic, which is lightweight and corrosion resistant. The liquid supply pump 322 can be a centrifugal pump, such as the ISG50-160(I) model, with a flow rate of 25m³ / h and a head of 32m, which can meet the requirements for coolant delivery. The positioning rod 331 of the spray plate assembly 33 can be made of aluminum alloy, and the liquid outlet plate 332 can be made of stainless steel. The diameter of the atomizing spray holes can be controlled between 0.1 and 0.3 mm to ensure the atomization effect of the coolant. The strip stamping press 4 can be a crank press, such as the J23-25 ​​model, with a nominal pressure of 250 kN, which can meet the stamping requirements of strip steel. The pressure sensor can be a strain gauge pressure sensor, such as the PT124G-111 model, with a measurement range of 0-50 MPa and an accuracy of ±0.2% FS, which can accurately monitor pressure changes during the stamping process. The winding equipment 5 can be an electric winding machine, such as the SJ-500 model, and the winding speed can be adjusted according to production needs. The winding machine drum can be made of carbon steel to ensure its strength and stability.

[0031] Reference Figure 2 and Figure 3 As shown, the uncoiler 1 includes a base 11, a mounting frame 12, and a winding pulley 13. The mounting frame 12 is vertically mounted on the upper surface of the base 11 and is fixedly connected to the base 11. The winding pulley 13 is located on the front surface of the mounting frame 12 and is rotatably connected to the mounting frame 12. The base 11 of the uncoiler 1 provides a stable support foundation for the entire uncoiling structure, ensuring the stability of the equipment during operation. The mounting frame 12 is used to mount the winding pulley 13, enabling it to rotate stably. The winding pulley 13 can uncoil the coiled strip steel, facilitating subsequent processes. The rotatable connection design between the winding pulley 13 and the mounting frame 12 allows the strip steel to be smoothly output during the uncoiling process, reducing strip steel jamming and damage, and improving production efficiency. The base 11 of the uncoiler 1 can be made of high-strength carbon steel, such as Q235 carbon steel, which has good strength and stability. The mounting frame 12 can be fixed to the base 11 by welding or bolting, ensuring a firm connection. The pulley 13 can be made of alloy steel, such as 40Cr alloy steel, which has high hardness and wear resistance. The rotation of the pulley 13 can be driven by a motor. The motor can be a Y-series three-phase asynchronous motor, such as the Y132M-4 model, with a power of 7.5kW and a speed of 1440r / min, which can provide stable power output.

[0032] Reference Figure 1 As shown, the laser processing component 2 etches V-shaped microgrooves on the strip surface, with a depth of 20-50 μm and a distance of 0.5-1 mm between them, to form stress guiding points. These microgrooves, with a depth of 20-50 μm and a distance of 0.5-1 mm between them, form stress guiding points. During the strip stamping process, stress is distributed and released along the direction of the microgrooves, avoiding springback caused by stress concentration. By precisely controlling the depth and spacing of the microgrooves, stress can be effectively guided, improving the dimensional and shape accuracy of the stamped strip.

[0033] Reference Figure 4 and Figure 5As shown, the cooling device 3 includes an equipment box 31, a water supply assembly 32, and a spray plate assembly 33. The equipment box 31 has a central trough 310. The water supply assembly 32 is fixedly installed in the equipment box 31, and the spray plate assembly 33 is symmetrically installed in the central trough 310. The equipment box 31 of the cooling device 3 provides installation space and protection for the entire cooling structure. The water tank 321 in the water supply assembly 32 stores coolant. The supply pump 322 draws coolant from the water tank 321 and delivers it to the spray plate assembly 33 through a supply pipe. The spray plate assembly 33 then sprays and cools the laser-etched strip steel. The equipment box 31 includes a top box 311 and support legs 312. The support legs 312 are evenly installed at the four corners of the lower end face of the top box 311 and are fixedly connected to the top box 311. By designing the equipment housing 31 with a structure in which the top box 311 and the support feet 312 cooperate, it is ensured that the top box 311 can be stably placed on the ground using the support feet 312, thus ensuring stability during cooling processing. The water supply assembly 32 includes a water storage tank 321 and a liquid supply pump 322. The liquid supply pump 322 is connected to the water storage tank 321 through a suction pipe, and the outlet of the liquid supply pump 322 is connected to the spray plate assembly 33 through a liquid supply pipe. By designing the water supply assembly 32 with a structure in which the water storage tank 321 and the liquid supply pump 322 cooperate, it is ensured that the coolant can be stored in the water storage tank 321 for use, and the coolant can be stably supplied to the spray plate assembly 33 after being drawn up by the liquid supply pump 322. The spray plate assembly 33 includes a positioning rod 331 and a liquid outlet plate 332. The liquid outlet plate 332 is fixedly installed at the lower end of the positioning rod 331, and several atomizing spray holes are opened on the liquid outlet plate 332. The spray plate assembly 33 has several atomizing nozzles on its outlet plate 332, which spray the coolant onto the strip surface in an atomized form, enabling rapid cooling. Rapid cooling alters the internal structure of the strip, increasing its hardness and strength, and further reducing springback after stamping. Vertical support frames 34 are installed at both ends of the cooling device 3, with support rollers 341 mounted at the heads of the support frames 34. The support rollers 341 are rotatably connected to the support frames 34. The support frames 34 and support rollers 341 ensure stable operation of the strip during cooling, preventing swaying and deformation, and ensuring the strip can stably pass between the upper and lower outlet plates 332, facilitating better cooling processing.

[0034] The implementation principle of a spring-loaded cold-rolled strip steel production device according to an embodiment of this application is as follows: In the actual production process, the coiled strip steel is first installed on the winding wheel 13 of the uncoiler 1. After being uncoiled by the uncoiler 1, the strip steel enters the laser processing component 2, where microgrooves are etched on the surface of the strip steel. Then, the strip steel enters the cooling device 3, which rapidly cools the strip steel. Next, the strip steel enters the strip steel stamping press 4 for stamping, with a pressure sensor monitoring the stamping pressure in real time. Finally, the stamped strip steel is coiled up by the winding device 5.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A production apparatus for spring-loaded cold-rolled strip steel, comprising an uncoiler (1), characterized in that: The uncoiler (1) is provided with a laser processing component (2) at the discharge end. The laser processing component (2) is used to etch microgrooves on the surface of the strip. The rear section of the laser processing component (2) is provided with a cooling device (3). The rear section of the cooling device (3) is provided with a strip stamping machine (4). The strip stamping machine (4) is equipped with a pressure sensor. The rear section of the strip stamping machine (4) is also provided with a winding device (5).

2. The production apparatus for spring-loaded cold-rolled strip steel according to claim 1, characterized in that: The uncoiling machine (1) includes a base (11), a mounting frame (12) and a winding wheel (13). The mounting frame (12) is vertically mounted on the upper surface of the base (11) and is fixedly connected to the base (11). The winding wheel (13) is located on the front end face of the mounting frame (12) and is rotatably connected to the mounting frame (12).

3. The production apparatus for spring-loaded cold-rolled strip steel according to claim 2, characterized in that: The laser processing component (2) etches a V-shaped microgroove on the surface of the strip steel, with a depth of 20-50 μm and a distance of 0.5-1 mm between the microgrooves, which is used to form stress guiding points.

4. The production apparatus for spring-loaded cold-rolled strip steel according to claim 3, characterized in that: The cooling device (3) includes an equipment box (31), a water supply component (32), and a spray plate assembly (33). The equipment box (31) has a central trough (310). The water supply component (32) is fixedly installed in the equipment box (31), and the spray plate assembly (33) is symmetrically installed in the central trough (310).

5. The production apparatus for spring-loaded cold-rolled strip steel according to claim 4, characterized in that: The equipment box (31) includes a top box (311) and support feet (312). The support feet (312) are evenly installed on the four corners of the lower end face of the top box (311), and the support feet (312) are fixedly connected to the top box (311).

6. The production apparatus for spring-loaded cold-rolled strip steel according to claim 5, characterized in that: The water supply assembly (32) includes a water storage tank (321) and a liquid supply pump (322). The liquid supply pump (322) is connected to the water storage tank (321) through a suction pipe, and the outlet of the liquid supply pump (322) is connected to the spray plate assembly (33) through a liquid supply pipe.

7. The production apparatus for spring-loaded cold-rolled strip steel according to claim 6, characterized in that: The spray plate assembly (33) includes a positioning rod (331) and a liquid outlet plate (332). The liquid outlet plate (332) is fixedly installed at the lower end of the positioning rod (331), and a plurality of atomizing spray holes are provided on the liquid outlet plate (332).

8. The production apparatus for spring-loaded cold-rolled strip steel according to claim 7, characterized in that: The cooling device (3) has vertical support frames (34) installed at both ends, and a support roller (341) is installed at the head of the support frame (34). The support roller (341) is rotatably connected to the support frame (34).

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