Steel plate leveling and blanking system and method

Abstract

The present invention discloses a steel plate leveling and blanking system and method, wherein a steel plate leveling device on an uncoiler is slidably connected to a base via two sets of slide rails, wherein the sliding in the feed direction is driven by a driving component. When a steel plate is placed on the blanking device for cutting and punching, the steel plate on the blanking device is pressed, and the steel plate leveling device continues to work. The continuously leveled steel plates generated between the two push the steel plate leveling device away from the blanking device. After the steel plate blanking is completed, the pressing component releases the steel plate, and the driving component and the steel plate leveling device together feed the leveled steel plate into the blanking device. During this process, the steel plate leveling mechanism does not need to be shut down, so there is no braking vibration and the processing efficiency can be improved. In addition, steel plate width positioning components and steel plate guide components are respectively provided in front and behind the steel plate leveling device and on the blanking device, and the steel plate leveling device can float in the width direction of the steel plate, which can minimize the curvature generated after the steel plate is leveled.

Description

Technical Field

[0001] The present invention relates to the technical field of tool processing, and in particular to a steel plate leveling and blanking system and method. Background Art

[0002] In the production process of garden blades, the first step is to level the steel coils after they are released, and then cut them into steel plates of the same length, and punch a mounting hole in the center of the steel plates. The traditional leveling and punching system has the following main problems: first, the steel coils themselves have certain defects, which will cause a certain curvature after being leveled. When the curved steel plates are fed into the punching table, the feeding angle will be offset, causing the position of the punching holes to deviate during shearing and punching, affecting the quality of the tool. To deal with this problem, the position of the steel coils can only be adjusted manually, which is very difficult to adjust due to the clamping force of the uncoiler and the weight of the steel coils; second, after the steel plates are fed into the punching table, the leveling action of the upstream uncoiler needs to be stopped due to the need for vertical cutting and punching. After the cutting and punching are completed, the uncoiler needs to be restarted for leveling. This requires repeated starting and stopping of the uncoiler, which will generate a certain amount of machine brake vibration when the uncoiler stops, affecting the processing accuracy. Summary of the Invention

[0003] The object of the present invention is to provide a steel plate leveling and blanking system and method to overcome the deficiencies in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention discloses a steel plate leveling and blanking system, comprising a material rack for storing steel plate coils, a decoiler and a blanking device, a base of the decoiler is provided with a movable plate that slides along the feeding direction of the coil, a driving component for driving the movable plate to reciprocate is provided at the bottom of the movable plate, a floating plate is slidably provided on the movable plate, a steel plate leveling device is provided on the floating plate, a steel plate width positioning component is provided on the feeding path of the steel plate leveling device; a steel plate pressing component, a punching and cutting die, a steel plate length positioning component and a steel plate guiding component are provided on the feeding path of the blanking device.

[0006] Preferably, the driving component is a bidirectional cylinder, and the cylinder barrel and piston rod of the bidirectional cylinder are fixedly connected to the base and the movable plate of the uncoiler respectively.

[0007] Preferably, the steel plate leveling device includes a plurality of leveling rollers, and a servo motor is installed on the steel plate leveling device, and the servo motor drives the leveling rollers to rotate through a synchronous belt and a synchronous pulley.

[0008] Preferably, a steel plate width positioning component is provided at the front and rear in the feeding path direction of the steel plate leveling device, and the steel plate width positioning components are respectively placed on a pair of positioning wheels and a pair of pressure wheels on both sides of the steel plate, and the pressure wheels are driven by a double-rod cylinder fixedly connected to the floating plate.

[0009] Preferably, the punching device is provided with a steel plate pressing component on the side close to the uncoiler, and the steel plate pressing component includes a rectangular frame, a pressing cylinder is fixedly installed above the rectangular frame, and a pressing block is fixedly provided at the bottom of the piston rod of the pressing cylinder.

[0010] Preferably, the steel plate guide component is provided at two locations, respectively placed on the mold base of the cutting and punching mold and the side of the rectangular frame, and the steel plate guide component includes a fixedly installed guide wheel 1 and a guide wheel 2 installed through a guide cylinder.

[0011] Preferably, the punching device is provided with the steel plate length positioning component on the side away from the uncoiler, and the steel plate positioning component includes a positioning frame, an L-shaped plate is provided on the positioning frame, a swing plate is rotatably connected to the L-shaped plate, and a reset spring and a proximity sensor are provided between the swing plate and the L-shaped plate.

[0012] Preferably, a limit plate is fixedly provided on the positioning frame, and when the swing plate rotates to the position of the limit plate, the proximity sensor is triggered.

[0013] Preferably, the sliding direction of the movable plate is perpendicular to that of the floating plate, a position sensor is fixedly provided at the bottom of the movable plate, and a limiting frame is provided at the bottom of the floating plate to prevent the floating plate from slipping.

[0014] The present invention discloses a steel plate leveling and blanking method, comprising the following steps:

[0015] Step 1: The steel plate leveling device on the uncoiler is movably arranged on the uncoiler base, and a driving component is provided to drive the steel plate leveling device to move in the steel plate feeding direction, and a steel plate width positioning component is provided on the feeding path of the steel plate leveling device;

[0016] Step 2: Arrange a steel plate pressing component, a punching and cutting die, a steel plate length positioning component, and a steel plate guide component on the feeding path of the blanking device;

[0017] Step 3: Control the material rack to place the steel plate coil, and the steel plate enters the steel plate leveling device for leveling. The steel plate width positioning component limits the swing and bending of the steel plate in the width direction during the leveling process. The leveled steel plate enters the blanking device;

[0018] Step 4: In the blanking device, the feeding angle of the steel plate is limited by the steel plate guide component, which straightens the steel plate. The straightened steel plate reaches the punching and cutting die;

[0019] Step 5: When the end of the steel plate contacts the steel plate length positioning, the steel plate pressing component is activated to press the steel plate against the punching and cutting dies. At the same time, the blanking device is activated to punch and cut the steel plate. At this time, the steel plate leveling device continues to work. The steel plate that continues to grow between the blanking device and the uncoiler pushes the steel plate leveling device to move away from the blanking device. The driving component cooperates with the movement of the steel plate leveling device to operate.

[0020] Step 6: The punched and cut steel plate is transferred from the die. When the steel plate length positioning component no longer detects the steel plate, the steel plate pressing component retracts and releases the steel plate, and the driving component returns at the same time, so that the subsequent steel plate passes through the punching and cutting die again and reaches the steel plate length positioning component;

[0021] Step 7: Repeat steps 5 and 6, and continue leveling and blanking the entire steel plate coil without stopping the steel plate leveling device.

[0022] Beneficial effects of the present invention: The present invention discloses a steel plate leveling and blanking system and method, in which the steel plate leveling device on the uncoiler is slidably connected to the base through two sets of slide rails, wherein the sliding in the feeding direction is driven by a driving component. When the steel plate is placed on the blanking device for cutting and punching, the steel plate on the blanking device is pressed, and the steel plate leveling device continues to work. The leveled steel plates continuously generated between the two will push the steel plate leveling device away from the blanking device. After the steel plate is blanked, the pressing component releases the steel plate, and the driving component and the steel plate leveling device together send the leveled steel plate into the blanking device. During this process, the steel plate leveling mechanism does not need to be shut down, so there is no braking vibration and the processing efficiency can be improved. In addition, steel plate width positioning components and steel plate guide components are respectively provided in front and behind the steel plate leveling device and on the blanking device, and the steel plate leveling device can float in the width direction of the steel plate, which can avoid the curvature generated after the steel plate is leveled as much as possible, and can also ensure the feeding angle of the steel plate when entering the blanking device, thereby avoiding processing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 This is a schematic structural diagram of an uncoiler and a blanking device according to an embodiment of the present invention;

[0025] Figure 3 2. It is a structural schematic diagram of an uncoiler according to an embodiment of the present invention;

[0026] Figure 4This is a schematic structural diagram of a steel plate leveling device according to an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the position of the position sensor in the uncoiler according to an embodiment of the present invention;

[0028] Figure 6 Schematic diagram of the structure of a blanking device according to an embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the cutting and punching positions of an embodiment of the present invention;

[0030] In the figure: 1-material rack, 2-uncoiler, 3-punching device, 4-steel plate coil, 21-base, 22-movable plate, 23-driving component, 24-floating plate, 25-steel plate leveling device, 251-leveling roller, 252-servo motor, 26-steel plate width positioning component, 261-positioning wheel, 262-pressure wheel, 263-double-rod cylinder, 27-position sensor, 31-punching and cutting die, 32-steel plate pressing component, 321-rectangular frame, 322-pressing cylinder, 33-steel plate length positioning component, 331-positioning frame, 332-L-shaped plate, 333-swinging plate, 334-proximity sensor, 335-limiting plate, 34-steel plate guide component, 341-guide wheel 1, 342-guide cylinder, 343-guide wheel 2. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the present invention.

[0032] refer to Figure 1-Figure 7 An embodiment of the present invention provides a steel plate leveling and blanking system, comprising a material rack 1 for storing steel plate coils 4, an uncoiler 2 for leveling the steel plate coils into a flat state, and a blanking device 3 for punching and cutting the flat steel plate.

[0033] refer to Figure 2The uncoiler 2 is provided with a base 21, and the base 21 is used to support the uncoiler and adjust the height of the equipment. A movable plate 22 sliding along the x-axis direction (coil feeding direction) is provided on the base 21 of the uncoiler 2, and a driving component 23 for driving the movable plate 22 to reciprocate is provided at the bottom of the movable plate 22, and the driving component 23 is composed of a bidirectional cylinder stroke limit and a position proximity switch. The cylinder barrel and piston rod of the bidirectional cylinder are fixedly connected to the base 21 and the movable plate 22 of the uncoiler 2 respectively, and the bidirectional cylinder is used to control the movable plate 22 to reciprocate along the x-axis direction. A floating plate 24 is slidingly provided on the movable plate 22, and the movable plate 22 and the floating plate 24 are both slid by slider rails. The slide rail arrangement direction of the movable plate 22 is the x-axis direction, and the slide rail arrangement direction of the floating plate 24 is the y-axis direction.

[0034] refer to Figure 3 , a steel plate leveling device 25 is provided on the floating plate 24, and a steel plate width positioning component 26 is provided at the front and rear of the steel plate leveling device 25 in the feeding path direction. The steel plate width positioning components 26 are respectively placed on a pair of positioning wheels 261 and a pair of pressure wheels 262 on both sides of the steel plate. The pressure wheels 262 are driven by a double-rod cylinder 263 fixedly connected to the floating plate 24. The double-rod cylinder 263 drives the pressure wheel 262 to press the steel plate between the pressure wheel 262 and the positioning wheel 261. The positioning wheel 261 is fixed to the support plate at the end of the steel plate leveling device 25 by a waist groove and screws. The position of the positioning wheel 261 and the stroke of the double-rod cylinder 263 can be adjusted to adapt to steel plate coils 4 of different widths.

[0035] refer to Figure 4 The steel plate leveling device 25 includes a plurality of leveling rollers 251, each equipped with a servo motor 252. The servo motor 252 drives the leveling rollers 251 via a synchronous belt and a synchronous pulley. Specifically, the steel plate placed between the two layers of leveling rollers 251 is leveled by two layers of leveling rollers 251, one above the other.

[0036] In this embodiment, the steel plate leveling device also includes a spiral elevator, which adjusts its position through a handle to achieve leveling of steel plates of different thicknesses; the leveling rollers are divided into: a downward pressure roller group on the upper layer of the middle part (5 rollers, adjusted up and down by 4 spiral elevators, used for leveling the coil); an active roller group on the lower layer of the middle part (6 rollers in the middle, used for leveling the coil), the active roller group is driven by a servo motor in combination with a synchronous belt and a synchronous pulley; and a clamping roller group at both ends (the clamping force is generated by four downward pressure cylinders to achieve coil conveying).

[0037] refer to Figure 5The bottom of the movable plate 22 is fixed with a position sensor 27 whose signal emission direction is consistent with the feeding direction, and the bottom of the floating plate 24 is provided with a limit frame to prevent the floating plate 24 from slipping. The position sensor 27 is used to detect whether the sliding plate 22 has moved to the right position.

[0038] refer to Figure 6 The feed path of the blanking device 3 is equipped with a steel plate pressing component 32, a punching and cutting die 31, a steel plate length positioning component 33, and a steel plate guide component 34. The steel plate pressing component 32 is located on the side close to the uncoiler 2, and the steel plate length positioning component 33 is located on the side away from the uncoiler 2. The steel plate pressing component and the steel plate guide component are used to limit the width position of the steel plate and to press the steel plate during punching to prevent it from moving backward. During punching, the steel plate is pressed to prevent the steel plate from moving under the action of the punching force, which may cause the length of the product to deviate.

[0039] The steel plate pressing component 32 includes a rectangular frame 321 , a pressing cylinder 323 is fixedly mounted on the rectangular frame 321 , and a pressing block is fixedly provided at the bottom of the piston rod of the pressing cylinder 323 .

[0040] The steel plate guide components 34 are located in two locations: on the die base of the cutting and punching dies and on the side of the rectangular frame 321. These components include a fixed guide wheel 1 341 and a guide wheel 2 343 mounted via a guide cylinder 342. Both guide wheels 34 are located upstream of the cutting die. Guide wheel 1 is bolted to the punching platform, and its position can be adjusted using these bolts to position the steel plate width, ensuring alignment between the centerlines of the steel plate and the die.

[0041] The above-mentioned guide rail in the y-axis direction enables the steel plate leveling device to float in the y-axis direction. When the center axis of the mold and the center axis of the leveling device do not coincide (the steel plate has a certain curvature), the guide cylinder at the mold will push the steel coil, thereby driving the leveling device to float on the Y-axis to adapt to this misalignment.

[0042] The steel plate positioning component includes a positioning frame 331, which is equipped with an L-shaped plate 332. A swing plate 333 is rotatably connected to the L-shaped plate 332. A return spring and a proximity sensor 334 are installed between the swing plate 333 and the side plate of the L-shaped plate 332. A limit plate 335 is fixed to the positioning frame 331. When the steel plate abuts the swing plate 333, compressing the return spring and causing the end of the steel plate to reach the limit plate 335, the proximity sensor 334 is triggered.

[0043] The distance between the material rack 1 and the uncoiler 2 is 4-5 meters. The steel plate has a certain elasticity in the width direction within this distance range. Since the steel plate released from the steel plate coil may have a certain curvature in its width direction, this bending may also occur during the unrestricted leveling process. The steel plate width positioning components are placed in front and behind the steel plate leveling device to avoid the occurrence of this bending.

[0044] In addition, due to the bending of the steel plate raw material, the steel plate will tilt when it reaches the punching die, resulting in the offset of the punching position and the tilt of the cut mouth. The punching device is equipped with a steel plate guide component, which limits the feed angle of the steel plate. In addition, the front steel plate leveling device will float in the width direction in conjunction with the feed angle limited by the steel plate guide component. The steel plate has a certain elasticity in the width direction in order to achieve the above-mentioned floating.

[0045] An embodiment of the present invention further provides a steel plate leveling and blanking method, comprising the following steps.

[0046] Phase 1: Build the above-mentioned steel plate leveling and blanking system: arrange the steel plate leveling device on the uncoiler movably on the uncoiler base, and set a driving component to drive the steel plate leveling device to move in the steel plate feeding direction, and set a steel plate width positioning component on the feeding path of the steel plate leveling device; set a steel plate pressing component, punching and cutting dies, steel plate length positioning component and steel plate guide component on the feeding path of the blanking device.

[0047] The second stage: the system performs continuous leveling and preparation before punching: the material rack is controlled to place the steel plate coil, the steel plate enters the steel plate leveling device for leveling, the steel plate width positioning component is used to limit the swing and bending of the steel plate in the width direction during the leveling process, and the leveled steel plate enters the punching device; in the punching device, the feeding angle of the steel plate is limited by the steel plate guide component, and the steel plate guide component straightens the steel plate, and the straightened steel plate reaches the punching and cutting die.

[0048] The third stage: continuous leveling and blanking of the system: When the end of the steel plate contacts the steel plate length positioning, the steel plate pressing component moves to press the steel plate against the punching and cutting die, and the blanking device moves to punch and cut the steel plate (the position of the punching and cutting points refers to Figure 7 ), at this time, the steel plate leveling device continues to work, and the steel plate that continues to grow between the blanking device and the uncoiler pushes the steel plate leveling device to move away from the blanking device, and the driving component cooperates with the movement of the steel plate leveling device to operate;

[0049] The punched and cut steel plate is transferred from the die. When the steel plate length positioning component no longer detects the steel plate, the steel plate pressing component retracts and releases the steel plate, and at the same time the driving component returns, so that the subsequent steel plate passes through the punching and cutting die again and reaches the steel plate length positioning component;

[0050] Repeat the above operations to complete the leveling and blanking of the entire steel plate coil without stopping the steel plate leveling device.

[0051] In the third stage, the leveling rollers on the steel plate leveling device never stop, so that the leveled steel plate between the uncoiler and the steel plate pressing component will become longer and longer. As long as there is no slippage between the leveling rollers and the steel plate, the steel plate leveling device on the uncoiler will naturally move away from the blanking device at a speed equal to the speed of the normal leveling rollers leveling the steel plate. In this process, the precision requirements for the driving components are not high. Therefore, in this embodiment, a bidirectional cylinder is used as the driving component. The precision is not high but can meet the requirements. In this embodiment, when the steel plate leveling device is away from the blanking device, the movement speed of the piston rod of the bidirectional cylinder is consistent with the movement speed of the steel plate leveling device. When the blanking is completed, the steel plate pressing component returns to its position, and the bidirectional cylinder controls the moving plate to return to its initial position. During the entire process, in addition to returning the movable plate, the bidirectional cylinder also has the following functions: when the processed steel plate is thin and the leveling device itself is relatively heavy, the steel plate that has been leveled by the leveling device and the punch press may be bent by the thrust. At this time, the cylinder water always applies a force away from the punch press to the leveling device, so that the steel plate between the leveling device and the punch press changes from a thrust state to a tension state, thereby preventing this section of the steel plate from bending.

[0052] Regarding the transfer of the punched and cut steel plate from the die in the third stage, it can be done manually or by arranging a cylinder on the punching device to push out the punched steel plate.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel plate leveling and blanking system, comprising a material rack for storing steel plate coils, an uncoiler and a blanking device, characterized in that: The base of the uncoiler is provided with a movable plate that slides along the feeding direction of the coil, the bottom of the movable plate is provided with a driving component for driving the movable plate to reciprocate, a floating plate is slidably provided on the movable plate, a steel plate leveling device is provided on the floating plate, and a steel plate width positioning component is provided on the feeding path of the steel plate leveling device; the feeding path of the punching device is provided with a steel plate pressing component, a punching and cutting die, a steel plate length positioning component and a steel plate guide component; The steel plate leveling device is provided with a steel plate width positioning component at the front and rear of the feed path direction, and the steel plate width positioning components are respectively placed on a pair of positioning wheels and a pair of pressing wheels on both sides of the steel plate, and the pressing wheels are driven by a double-rod cylinder fixedly connected to the floating plate; The punching device is provided with a steel plate pressing component on the side close to the uncoiler, and the steel plate pressing component includes a rectangular frame, a pressing cylinder is fixedly installed above the rectangular frame, and a pressing block is fixedly provided at the bottom of the piston rod of the pressing cylinder; The steel plate guide component is provided at two locations, respectively placed on the die base of the cutting and punching dies and the side of the rectangular frame, and the steel plate guide component includes a fixed guide wheel 1 and a guide wheel 2 installed through a guide cylinder; The steel plate length positioning component is provided on the side of the punching device away from the uncoiler. The steel plate length positioning component includes a positioning frame, an L-shaped plate is provided on the positioning frame, a swing plate is rotatably connected to the L-shaped plate, and a reset spring and a proximity sensor are provided between the swing plate and the L-shaped plate.

2. A steel plate leveling and blanking system according to claim 1, characterized in that: The driving component is a bidirectional cylinder, and the cylinder barrel and piston rod of the bidirectional cylinder are fixedly connected to the base and the movable plate of the uncoiler respectively.

3. The steel plate leveling and blanking system according to claim 1, characterized in that: The steel plate leveling device comprises a plurality of leveling rollers. A servo motor is installed on the steel plate leveling device. The servo motor drives the leveling rollers to rotate through a synchronous belt and a synchronous pulley.

4. The steel plate leveling and blanking system according to claim 1, characterized in that: A limit plate is fixedly provided on the positioning frame, and when the swing plate rotates to the position of the limit plate, the proximity sensor is triggered.

5. The steel plate leveling and blanking system according to claim 1, characterized in that: The sliding direction of the movable plate is perpendicular to that of the floating plate. A position sensor is fixedly provided at the bottom of the movable plate. A limiting frame is provided at the bottom of the floating plate to prevent the floating plate from slipping.

6. A steel plate leveling and blanking method, characterized in that: The method is implemented using a steel plate leveling and blanking system according to any one of claims 1 to 5, comprising the following steps: Step 1: The steel plate leveling device on the uncoiler is movably arranged on the uncoiler base, and a driving component is provided to drive the steel plate leveling device to move in the steel plate feeding direction, and a steel plate width positioning component is provided on the feeding path of the steel plate leveling device; Step 2: Arrange a steel plate pressing component, a punching and cutting die, a steel plate length positioning component, and a steel plate guide component on the feeding path of the blanking device; Step 3: Control the material rack to place the steel plate coil, and the steel plate enters the steel plate leveling device for leveling. The steel plate width positioning component limits the swing and bending of the steel plate in the width direction during the leveling process. The leveled steel plate enters the blanking device; Step 4: In the blanking device, the feeding angle of the steel plate is limited by the steel plate guide component, which straightens the steel plate. The straightened steel plate reaches the punching and cutting die; Step 5: When the end of the steel plate contacts the steel plate length positioning, the steel plate pressing component is activated to press the steel plate against the punching and cutting dies. At the same time, the blanking device is activated to punch and cut the steel plate. At this time, the steel plate leveling device continues to work. The steel plate that continues to grow between the blanking device and the uncoiler pushes the steel plate leveling device to move away from the blanking device. The driving component cooperates with the movement of the steel plate leveling device to operate. Step 6: The punched and cut steel plate is transferred from the die. When the steel plate length positioning component no longer detects the steel plate, the steel plate pressing component retracts and releases the steel plate, and the driving component returns at the same time, so that the subsequent steel plate passes through the punching and cutting die again and reaches the steel plate length positioning component; Step 7: Repeat steps 5 and 6, and continue leveling and blanking the entire steel plate coil without stopping the steel plate leveling device.

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