An automobile part blanking frame number optimization method

Abstract

The application relates to the technical field of automobile parts, in particular to a method for optimizing the number of automobile part blanking racks, which comprises transferring, positioning, feeding and finished product conveying, and through the height-adjustable conveying device, the automobile parts are placed, and the automobile parts are blanked under the condition that the speed is constant, the clamping process is saved, and the problems of part stacking and disorder are avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a method for optimizing the number of unloading racks for automotive parts. Background Technology

[0002] When the blanking method uses a stacked frame, the precision forging parts are generally placed randomly and arbitrarily when they are placed into the frame. During blanking and conveying, the parts are prone to collisions, which will inevitably affect the precision of the precision forging parts. Secondly, when the blanking method uses an intermittent cycle, robots or gantry robots are generally used to pick up the parts one by one according to the production cycle and transfer the workpieces from one station to another. Especially for parts with irregular shapes and complex structures, there is a problem that the robot is not easy to pick up. At the same time, different parameters need to be set for the gripper when picking up automotive parts of different sizes, which is inconvenient. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies. When the blanking method uses a stacked material frame, precision forging parts are generally placed randomly and arbitrarily upon being placed into the frame. This easily leads to collisions during blanking and conveying, inevitably affecting the precision of the forging parts. Secondly, when blanking is done intermittently, robots or gantry robots are generally used to pick up the parts one by one according to the production rhythm, transferring the workpieces from one station to another. This is especially problematic for parts with irregular shapes and complex structures, where it is difficult for the robot to pick them up. Furthermore, picking up automotive parts of different sizes requires setting different parameters for the gripper, causing inconvenience. Therefore, this invention proposes an optimization method for the number of blanking frames for automotive parts.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A method for optimizing the number of unloading racks for automotive parts is designed, characterized by the following steps: S1. Transfer: The transfer steps specifically include: F1. During production, the overhead crane first places the bundled rolls of material on the preparation platform. The loading trolley automatically receives the material and runs to the uncoiler. The PLC control system automatically positions the uncoiler system according to the input material specifications, so that the loading trolley automatically runs to the uncoiler system. F2. After leveling, the sheet material is sheared and enters the looper pit to form a buffer ring to compensate for the speed difference between the continuous operation of the coil in the uncoiling and leveling section and the intermittent action when entering the blanking and cutting die. F3. Feed materials according to the step requirements, and after each step, the feeding roller is quickly lifted to avoid over-positioning of the sheet material due to the mold positioning pin. This production line has functions such as uncoiling, leveling, servo step feeding, oiling and rust prevention, overall lifting of the worktable, press unloading, and sorting and collecting finished and waste materials. F4. Automatic unloading devices are set at the discharge ends of the warm section conveyor and the air-cooled section conveyor respectively. After two automatic unloading settings, the automotive parts are automatically rotated horizontally from the warm section conveyor and transported to the air-cooled section conveyor, so that the unloading of automotive parts from the automotive production line and the various processes are automatically connected and transported. S2. Positioning: During feeding, in order to ensure that the automotive parts are in the same center position as the mold installed in the press after feeding, so as to shorten the feeding auxiliary time, improve production efficiency and save raw materials, the uncoiler is equipped with a side positioning control device for automotive parts. This device consists of a telescopic baffle, a hydraulic cylinder for driving the telescopic baffle as a power source, a proximity switch for detecting the end of the automotive parts, and a displacement sensor that can extend and retract synchronously with the hydraulic cylinder. S3. Feeding: The stepper feeding accuracy is ensured by closed-loop control through the encoder. Due to the varying degrees of slippage and overfeeding during the feeding process, as well as the wear of the rubber-coated clamping rollers under long-term operation. S4. In order to enable the sheet material to pass smoothly through the conveyor belt, all conveying mechanisms are concentrated on the same workbench. The height of the entire workbench is adjusted by using a worm gear and worm wheel automatic lifting mechanism to realize the conveying of the sheet material. To ensure the stability of the workbench in the working state, a locking structure is set between the lifting mechanism and the workbench. S5. Finished product conveying: The neatly stacked sheets are secured to the transport vehicle in the workshop using clamps and transported to the warehouse for labeling and storage.

[0005] Preferably, in step S4, the locking structure involves adjusting the adjustable support trunnion in the automatic unloading device using an Allen wrench. The adjustable support trunnion rotates the automatic unloading chute to a suitable angle, thereby enabling the smooth and unobstructed transfer and unloading of automotive parts. Specifically, the automatically unloading chute, with its angle appropriately adjusted, is locked by adjusting the bolts to pre-tighten the shaped collar.

[0006] Preferably, in the S2 positioning step, during the production process, after setting parameters according to the incoming material specifications, the PLC program sends an instruction to the side positioning device. The telescopic baffle, driven by the hydraulic cylinder, quickly moves along the main shaft direction of the uncoiler to the designated position. At the same time, the displacement sensor calculates the extension and retraction of the hydraulic cylinder piston rod and sends a signal to the PLC program to stop the translation. When the automotive part is transported by the loading trolley to a position that can activate the proximity switch, the proximity switch sends a signal to the PLC, the loading trolley stops, and the automotive part accurately stops at the set position.

[0007] Preferably, in step F2, the sheet material coming up from the looper pit is fed into the progressive die of the press via an electric automatic centering device, a power failure prevention and material return device, an AC servo fixed length feeding device, a double-sided roller oiling device, and a hydraulically telescopic guiding platform installed on a large workbench with automatic lifting and multiple functions.

[0008] Preferably, in step F1, the sheet material is placed in the center position, and then the hydraulic expansion and contraction drum tightens and positions the coil, and unwinds and feeds the material. The sheet material enters the leveling machine through the feeding device. The leveling machine adopts a four-roller non-parallel roller array to achieve flatness of the sheet material and eliminate the internal stress of the sheet material.

[0009] Preferably, in step F3, the die of a multi-station progressive stamping die is adapted to be damaged, and the finished product is separated from the scrap after stamping and blanking, until the finished product is conveyed and collected.

[0010] Preferably, in step S3, in addition to using a digital servo motor for length control, a closed-loop feedback system is also formed using a measuring roller and an encoder. The present invention proposes an optimization method for the number of unloading racks for automotive parts, which has the following advantages: the optimization method for the number of unloading racks for automotive parts uses a height-adjustable conveyor device to place automotive parts and unload them at a constant speed, eliminating the clamping process and avoiding the problem of parts being piled up and disorderly. Detailed Implementation

[0011] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example

[0012] A method for optimizing the number of unloading racks for automotive parts includes the following steps: S1. Transfer: The transfer steps specifically include: F1. During production, the overhead crane first places the bundled rolls of material on the preparation platform. The feeding trolley automatically receives the material and runs to the uncoiler. The PLC control system automatically positions the uncoiler according to the input material specifications and the instructions issued by the uncoiler system, so that the feeding trolley automatically runs to the uncoiler system, places the sheet in the center position, and then the hydraulic expansion and contraction drum tightens and positions the rolls and unwinds them. The sheet enters the leveling machine through the feeding device. The leveling machine uses a four-roller non-parallel roller array to achieve flatness of the sheet and eliminate the internal stress of the sheet. F2. After leveling, the sheet material is sheared at the head and enters the looper pit to form a buffer ring to compensate for the speed difference between the continuous operation of the coil in the uncoiling and leveling section and the intermittent action when entering the blanking and cutting die. The sheet material coming out of the looper pit is fed into the progressive die of the press through an electric automatic centering device, a power failure prevention and material return device, an AC servo fixed length feeding device, a double-sided roller oiling device, and a hydraulically telescopic material guiding platform on a large workbench with automatic lifting and multiple functions. F3. Feed material according to the step requirements, and after each step, the feeding roller is quickly lifted to avoid over-positioning of the sheet material due to the mold positioning pin. This production line has functions such as uncoiling, leveling, servo step feeding, oiling and rust prevention, overall lifting of the worktable, press unloading, and sorting and collecting finished and scrap materials. It can adapt to the damage of the mold in multi-station progressive stamping dies. After stamping and unloading, the finished product and scrap are separated until the finished product is conveyed and collected in a centralized manner. F4. Automatic unloading devices are set at the discharge ends of the warm section conveyor and the air-cooled section conveyor respectively. After two automatic unloading settings, the automotive parts are automatically rotated horizontally from the warm section conveyor and transported to the air-cooled section conveyor, so that the unloading of automotive parts from the automotive production line and the various processes are automatically connected and transported. S2. Positioning: During loading, to ensure that the car parts are in the same center position as the mold installed in the press after loading, so as to shorten the loading auxiliary time, improve production efficiency, and save raw materials, a side positioning control device for car parts is installed on the uncoiler. This device consists of a telescopic baffle, a hydraulic cylinder for driving the telescopic baffle as a power source, a proximity switch for detecting the end of the car parts, and a displacement sensor that can extend and retract synchronously with the hydraulic cylinder. During the production process, after setting parameters according to the specifications of the incoming material, the PLC program sends a command to the side positioning device. The telescopic baffle is quickly translated to the designated position along the main shaft of the uncoiler under the drive of the hydraulic cylinder. At the same time, the displacement sensor calculates the extension and retraction of the hydraulic cylinder piston rod and sends a signal to the PLC program to stop the translation. When the car parts are transported by the loading trolley to the position where the proximity switch can be activated, the proximity switch sends a signal to the PLC, the loading trolley stops, and the car parts accurately stop at the set position. S3. Feeding: The stepper feeding accuracy is ensured by closed-loop control through encoder. Since different degrees of slippage and overfeeding may occur during the feeding process, and the rubber-coated clamping roller will wear out under long-term operation, in addition to using a digital servo motor for fixed-length drive, a closed-loop feedback system is also formed by measuring roller and encoder. S4. To ensure the smooth passage of sheet metal through the conveyor belt, all conveying mechanisms are concentrated on the same workbench. An automatic lifting mechanism using a worm gear and turbine is employed to adjust the height of the entire workbench, facilitating sheet metal conveying. To guarantee the stability of the workbench during operation, a locking structure is installed between the lifting mechanism and the workbench. This locking structure is achieved by adjusting the adjustable support trunnion in the automatic unloading device using an Allen wrench. The adjustable support trunnion rotates the automatic unloading chute to a suitable angle, thus enabling the smooth and unobstructed transfer and unloading of automotive parts. Specifically, the pre-tightening of the shaped collar using adjusting bolts locks the appropriately angled automatic unloading chute. S5. Finished product conveying: The neatly stacked sheets are secured to the transport vehicle in the workshop using clamps and transported to the warehouse for labeling and storage. Example

[0013] A method for optimizing the number of unloading racks for automotive parts includes the following steps: S1. Transfer: The transfer steps specifically include: F1. During production, the overhead crane first places the bundled rolls of material on the preparation platform. The feeding trolley automatically receives the material and runs to the uncoiler. The PLC control system automatically positions the uncoiler according to the input material specifications and the instructions issued by the uncoiler system, so that the feeding trolley automatically runs to the uncoiler system, places the sheet in the center position, and then the hydraulic expansion and contraction drum tightens and positions the rolls and unwinds them. The sheet enters the leveling machine through the feeding device. The leveling machine uses a four-roller non-parallel roller array to achieve flatness of the sheet and eliminate the internal stress of the sheet. F2. After leveling, the sheet material is sheared at the head and enters the looper pit to form a buffer ring to compensate for the speed difference between the continuous operation of the coil in the uncoiling and leveling section and the intermittent action when entering the blanking and cutting die. The sheet material coming out of the looper pit is fed into the progressive die of the press through an electric automatic centering device, a power failure prevention and material return device, an AC servo fixed length feeding device, a double-sided roller oiling device, and a hydraulically telescopic material guiding platform on a large workbench with automatic lifting and multiple functions. F3. Feed material according to the step requirements, and after each step, the feeding roller is quickly lifted to avoid over-positioning of the sheet material due to the mold positioning pin. This production line has functions such as uncoiling, leveling, servo step feeding, oiling and rust prevention, overall lifting of the worktable, press unloading, and sorting and collecting finished and scrap materials. It can adapt to the damage of the mold in multi-station progressive stamping dies. After stamping and unloading, the finished product and scrap are separated until the finished product is conveyed and collected in a centralized manner. F4. Automatic unloading devices are set at the discharge ends of the warm section conveyor and the air-cooled section conveyor respectively. After two automatic unloading settings, the automotive parts are automatically rotated horizontally from the warm section conveyor and transported to the air-cooled section conveyor, so that the unloading of automotive parts from the automotive production line and the various processes are automatically connected and transported. S2. Positioning: During loading, to ensure that the car parts are in the same center position as the mold installed in the press after loading, so as to shorten the loading auxiliary time, improve production efficiency, and save raw materials, a side positioning control device for car parts is installed on the uncoiler. This device consists of a telescopic baffle, a hydraulic cylinder for driving the telescopic baffle as a power source, a proximity switch for detecting the end of the car parts, and a displacement sensor that can extend and retract synchronously with the hydraulic cylinder. During the production process, after setting parameters according to the specifications of the incoming material, the PLC program sends a command to the side positioning device. The telescopic baffle is quickly translated to the designated position along the main shaft of the uncoiler under the drive of the hydraulic cylinder. At the same time, the displacement sensor calculates the extension and retraction of the hydraulic cylinder piston rod and sends a signal to the PLC program to stop the translation. When the car parts are transported by the loading trolley to the position where the proximity switch can be activated, the proximity switch sends a signal to the PLC, the loading trolley stops, and the car parts accurately stop at the set position. S3. Feeding: The stepper feeding accuracy is ensured by closed-loop control through encoder. Since different degrees of slippage and overfeeding may occur during the feeding process, and the rubber-coated clamping roller will wear out under long-term operation, in addition to using a digital servo motor for fixed-length drive, a closed-loop feedback system is also formed by measuring roller and encoder. S4. To ensure the smooth passage of sheet metal through the conveyor belt, all conveying mechanisms are concentrated on the same workbench. The height of the entire workbench is adjusted using a worm gear and worm wheel automatic lifting mechanism to achieve sheet metal conveying. To ensure the stability of the workbench during operation, a locking structure is installed between the lifting mechanism and the workbench. This locking structure uses a ferrule-type locking mechanism in the prior art, with the irregularly shaped collar fixedly welded to the locking base plate. The adjustable support trunnion journal of the adjustable automatic feeding chute is configured in the inner hole of the irregularly shaped collar and locked in place by fasteners. The adjustable automatic feeding chute can be adjusted to a suitable angle and locked by the ferrule-type locking mechanism. The automatic feeding chute with the adjusted angle is locked by pre-tightening the irregularly shaped collar with adjusting bolts. S5. Finished product conveying: The neatly stacked sheets are secured to the transport vehicle in the workshop using clamps and transported to the warehouse for labeling and storage.

[0014] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for optimizing the number of unloading racks for automotive parts, characterized in that, Specifically, the steps include the following: S1. Transfer: The transfer steps specifically include: F1. During production, the overhead crane first places the bundled rolls of material onto the preparation platform. The loading trolley automatically receives the material and moves to the uncoiler. The PLC control system, based on the input material specifications, automatically positions itself according to the instructions issued by the cutting system, causing the loading trolley to automatically move to the cutting system. The sheet is placed in the center position, and then the hydraulic expansion and contraction drum tightens and positions the coil, and then unwinds and feeds it. The sheet enters the leveling machine through the feeding device. The leveling machine adopts a four-roller non-parallel roller array to achieve flatness of the sheet and eliminate the internal stress of the sheet. F2. After leveling, the sheet metal is sheared and enters the looper pit to form a buffer ring. The sheet metal coming out of the looper pit is fed into the progressive die of the press through an electric automatic centering device, a power failure prevention and material return device, an AC servo fixed length feeding device, a double-sided roller oiling device, and a hydraulic telescopic material guiding platform on a large workbench with automatic lifting and multiple functions. F3. Feed the material according to the step requirements, and after each step, the feeding roller is quickly lifted to avoid over-positioning of the sheet material due to the mold positioning pin; F4. Automatic unloading devices are set at the discharge ends of the warm section conveyor and the air-cooled section conveyor respectively. After two automatic unloading settings, the automotive parts are automatically rotated horizontally from the warm section conveyor and transported to the air-cooled section conveyor, so that the unloading of automotive parts from the automotive production line and the various processes are automatically connected and transported. S2. Positioning: During loading, in order to ensure that the automotive parts are in the same center position as the mold installed in the press after loading, a side positioning control device for automotive parts is installed on the uncoiler. This device consists of a telescopic baffle, a hydraulic cylinder for driving the telescopic baffle as a power source, a proximity switch for detecting the end of the automotive parts, and a displacement sensor that can extend and retract synchronously with the hydraulic cylinder. S3. Feeding: The stepper feeding accuracy is ensured by closed-loop control through the encoder. Due to the varying degrees of slippage and overfeeding during the feeding process, as well as the wear of the rubber-coated clamping rollers under long-term operation. S4. In order to enable the sheet material to pass smoothly through the conveyor belt, all conveying mechanisms are concentrated on the same workbench. The height of the entire workbench is adjusted by using a worm gear and worm wheel automatic lifting mechanism to realize the conveying of the sheet material. To ensure the stability of the workbench in the working state, a locking structure is set between the lifting mechanism and the workbench. S5. Finished product conveying: The neatly stacked sheets are secured to the transport vehicle in the workshop using clamps and transported to the warehouse for labeling and storage.

2. The method for optimizing the number of unloading racks for automotive parts according to claim 1, characterized in that, In step S4, the locking structure is achieved by adjusting the adjustable support trunnion in the automatic feeding device with an Allen wrench, wherein the automatic feeding chute with the appropriate angle is locked by adjusting the bolt to pre-tighten the irregular collar.

3. The method for optimizing the number of unloading racks for automotive parts according to claim 1, characterized in that, In the S2 positioning step, during the production process, after setting parameters according to the incoming material specifications, the PLC program sends an instruction to the side positioning device. The telescopic baffle, driven by the hydraulic cylinder, quickly moves along the main shaft of the uncoiler to the designated position. At the same time, the displacement sensor calculates the extension and retraction of the hydraulic cylinder piston rod and sends a signal to the PLC program to stop the translation. When the automotive part is transported by the loading trolley to a position that can activate the proximity switch, the proximity switch sends a signal to the PLC, the loading trolley stops, and the automotive part accurately stops at the set position.

4. The method for optimizing the number of unloading racks for automotive parts according to claim 1, characterized in that, In step F3, the raw die of a multi-station progressive stamping die can be adapted to the separation of finished product and scrap after stamping blanking, until the finished product is conveyed and collected.

5. The method for optimizing the number of unloading racks for automotive parts according to claim 1, characterized in that, In step S3, in addition to using a digital servo motor for length control, a measuring roller and an encoder are also used to form a closed-loop feedback system.