Metal plate bending forming device with automatic feeding and positioning

Abstract

The application relates to the technical field of metal processing, in particular to a metal plate bending forming device with automatic feeding and positioning, which comprises a workbench, a U-shaped sliding groove is arranged in the workbench; two material returning assemblies distributed at 90 degrees are arranged on the top of the workbench, and the two material returning assemblies slide along the sliding groove. The metal plate bending forming device with automatic feeding and positioning is characterized in that the material returning assembly and the downward pressing assembly are matched, the triangular structure of the downward pressing block, the rotating shaft and the limiting column constitute a one-way limiting mechanism, when the workpiece is completed with the roll circle and moves back along with the positioning assembly and the material returning assembly, the downward pressing block does not rotate, the placing table is forced to move downward, the jacking block relatively rises, and the workpiece is automatically lifted out of the positioning assembly, the process does not need an independent driving source or manual intervention, the material returning is completed in the backstroke, the structure is simplified, the cost is reduced, the manual material returning time is saved, the operation process is simplified, and the labor loss is reduced.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, specifically to a metal sheet bending and forming device with automatic feeding and positioning. Background Technology

[0002] Metal sheet bending and forming equipment is widely used in industries such as machinery, construction, automobiles, and hardware to process metal sheets into the required angles, arcs, or rolled shapes.

[0003] Existing hinge rolling processing equipment typically relies on manual operation for loading, unloading, positioning, and unloading. Operators must manually place the sheet metal in the processing position and manually remove it after forming, resulting in long processing cycles and hindering continuous and efficient production. Furthermore, the lack of automatic positioning mechanisms makes it easy for workpieces to shift during movement and bending, leading to inconsistent bending angles or irregular rolled shapes, affecting product yield. During the rolling forming process, the hydraulic or mechanical pressure is high, requiring personnel to be close to the processing area for loading and unloading, posing safety risks such as crushing and collisions, especially for new... Manual operation, especially when the operating area and processing area are not separated, can easily lead to workplace accidents. Production efficiency is directly related to the level of skill. Furthermore, rolled workpieces are tightly attached to the positioning mechanism or mold, and manual removal is time-consuming and laborious, and can easily cause workpiece deformation or damage. Although some existing devices have a material unloading structure, it is mostly an independent action that requires additional power or manual intervention. It cannot automatically unload materials during the feeding return process. Moreover, such equipment is usually a single-station processing equipment, and loading and unloading can only be performed after processing has stopped, resulting in low equipment utilization and long production cycles. Summary of the Invention

[0004] The purpose of this invention is to provide a metal sheet bending and forming device with automatic feeding and positioning, so as to solve the problems of insufficient production safety, production efficiency being affected by loading and unloading operations and highly correlated with skill level in the prior art. To achieve the above objective, this invention provides the following technical solution: a metal sheet bending and forming device with automatic feeding and positioning, including a worktable, wherein the interior of the worktable is provided with a U-shaped groove; The top of the workbench is provided with two unloading components that are distributed at a 90-degree angle, and the two unloading components slide along the slide groove; Each of the ejector components is provided with a positioning component for fixing the workpiece at the top. The worktable is provided with two sets of pressing components at the top. The worktable is also provided with two sets of hydraulic components at the top. The two sets of hydraulic components are located at the top of both ends of the slide. The workpiece moves with the ejector component and is pushed off the ejector component when it passes the pressing component on the return stroke. The pressing assembly includes a second connecting seat fixedly connected to the top of the workbench. A rotating shaft is rotatably connected inside the second connecting seat. A triangular pressing block is fixedly connected to the end of the rotating shaft away from the second connecting seat. A limiting post is fixedly connected to the side of the pressing block near the second connecting seat. The limiting post rests against the second connecting seat under the weight of the pressing block.

[0005] More preferably, a drive assembly is provided at the center of the workbench. The drive assembly includes a drive motor fixedly connected to the top of the workbench via a bracket. The output end of the drive motor is connected to a drive shaft via a coupling. One end of the drive shaft movably passes through the workbench. The end of the drive shaft located at the bottom of the workbench is fixedly connected to two first slide rods distributed at ninety degrees. Each first slide rod corresponds to a set of unloading assembly and positioning assembly. Each of the first sliding rods has a sliding sleeve slidably fitted onto its outer wall. The top of the sliding sleeve is rotatably connected to a first connecting seat. The top of the first connecting seat is fixedly connected to a slider. The top of the slider is fixedly connected to a base.

[0006] More preferably, the unloading assembly includes a first sliding column fixedly connected to the four corners of the top of the drive assembly, a first spring movably sleeved on the outer wall of the first sliding column, and a lifting block fixedly connected to the top of the drive assembly.

[0007] More preferably, the positioning component includes a placement platform that is slidably connected to a first sliding column, with the workpiece placed on top of the placement platform. A limiting block for limiting the workpiece is fixedly connected to the top of the placement platform. Fixed seats are fixedly connected to both sides of the top of the placement platform. Two connecting rods are slidably connected inside each fixed seat. A limiting block is fixedly connected to one end of the two connecting rods near the stop, while a fixed plate is fixedly connected to the other end away from the stop. Two second springs abut against the limiting block and the fixed seat, and the two second springs are respectively sleeved on the two connecting rods. An clearance groove adapted to the lifting block is opened inside the placement platform. A protruding column is fixedly connected to one side of the opposite side of the placement platform.

[0008] More preferably, the hydraulic assembly includes a hydraulic section and a limiting section. The hydraulic section includes support platforms that are fixedly connected to both sides of the top of the workbench. A hydraulic press is fixedly connected to the top of the support platform, and the output end of the hydraulic press moves through the support platform.

[0009] More preferably, the limiting part includes a limiting plate fixedly connected to the output end of the hydraulic press, and the limiting plate is L-shaped. A roller support is fixedly connected to one side of the bottom of the limiting plate, and a rolling wheel is rotatably connected inside the roller support. A second sliding column is slidably connected up and down inside the limiting plate. A pressure plate is fixedly connected to the bottom of the second sliding column. A third spring abuts between the bottom of the limiting plate and the top of the pressure plate, and the third spring is sleeved on the second sliding column.

[0010] More preferably, the top two sides of the workbench are provided with rolling assemblies. The rolling assembly includes a load-bearing part and a rolling part. The load-bearing part includes a force-bearing frame and a slide connected to the top of the workbench. The force-bearing frame can be inserted between the base and the pressure plate. The slide is used to guide the rolling part.

[0011] More preferably, each of the rolled portions includes an extrusion table slidably connected to the slide table and two L-shaped connectors fixedly connected to the top of the worktable. The bottom of the extrusion table is fixedly connected to the L-shaped connectors, and the bottom of the L-shaped connectors is provided with a U-shaped groove. The side of the extrusion table near the pressure plate is provided with a rolling groove.

[0012] Further preferably, each of the extrusion tables is provided with a reset assembly at its bottom. The reset assembly includes two third connecting seats. The two third connecting seats are fixedly connected to a second slide rod on their opposite sides. The L-shaped connector is inserted into the outer wall of the second slide rod through a U-shaped groove at its bottom. A gasket is abutted on the side of the L-shaped connector near the pressure plate, and the gasket is slidably sleeved on the second slide rod. A fourth spring is abutted on the side of the gasket away from the L-shaped connector, and the fourth spring is sleeved on the second slide rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, the material ejection assembly and the pressing assembly work together to form a one-way limiting mechanism using the triangular structure of the pressing block, the rotating shaft, and the limiting post. When the workpiece is rolled into a circle and moves back along with the positioning assembly and the material ejection assembly, the pressing block does not rotate, forcing the placement table to move down and the lifting block to rise relative to it, automatically pushing the workpiece off the positioning assembly. This process does not require an independent drive source or manual intervention. Material ejection is completed during the return stroke, simplifying the structure, reducing costs, saving manual material ejection time, simplifying the operation process, and reducing labor costs.

[0014] In this invention, two sets of hydraulic components, two sets of rolling components, two sets of unloading components, and two sets of positioning components are set up. Together with a U-shaped chute and first sliding rods distributed at ninety degrees, when one set of workpieces is being rolled at the end of the chute, the other set moves to the middle of the chute for loading and unloading. This allows the loading, processing, and unloading processes to overlap in time, enabling continuous alternating operations, significantly shortening the production cycle and improving equipment utilization. The two sets of positioning components and unloading components are set far apart. The personnel loading and unloading position is located in the middle of the chute, while the rolling processing area is located below the hydraulic components at both ends of the chute. Operators do not need to enter the high-pressure processing area, which effectively avoids the risk of injury caused by the operation of the hydraulic press or workpiece splashing, and especially reduces the safety hazards for novice operators.

[0015] In this invention, the positioning component uses a limit block and a stop block driven by a second spring to elastically clamp and limit the workpiece, ensuring that the workpiece is accurately positioned and does not deviate when it moves to the processing position. At the same time, the pressure plate in the hydraulic component presses the workpiece before rolling, and the limit plate stops the stop block after it descends, preventing the positioning component and the unloading component from shifting during the processing, thereby ensuring the consistency of the rolling size and the forming accuracy.

[0016] In this invention, a force-bearing frame is provided in the rolling assembly. When the positioning assembly and the unloading assembly move to the end of the chute, the force-bearing frame is inserted between the base and the pressure plate to transmit the rolling pressure to the worktable, thereby preventing the workpiece from warping or undergoing unexpected deformation during the pressure process and further improving the product qualification rate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the lifting block structure of the present invention; Figure 3 This is a schematic diagram of the positioning component structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the hydraulic component structure of the present invention; Figure 6 This is a schematic diagram of the structure of the rolling assembly and the resetting assembly of the present invention; Figure 7 This is a schematic diagram of the downward pressing component structure of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point B; Figure 10 This is a side view of the structure of the present invention; Figure 11 This is a schematic diagram of the workpiece in a rolled-up state according to the present invention; Figure 12 This is a schematic diagram of the cross-sectional structure of the workpiece in the rolled-up state according to the present invention.

[0018] In the diagram: 1. Workbench; 2. Drive assembly; 3. Unloading assembly; 4. Positioning assembly; 5. Pressing assembly; 6. Hydraulic assembly; 7. Rolling assembly; 8. Reset assembly; 11. Slide rail; 21. Drive motor; 22. Base; 23. Slider; 24. First connecting seat; 25. First sliding rod; 26. Sliding sleeve; 27. Drive shaft; 31. Placement platform; 32. First spring; 33. Lifting block; 34. First sliding column; 35. Protruding column; 36. Clearance groove; 41. Fixed seat; 42. Connecting rod; 43. Fixed plate ; 44. Limiting block; 45. Second spring; 46. Stop block; 51. Second connecting seat; 52. Lower pressing block; 53. Rotating shaft; 54. Limiting column; 61. Support platform; 62. Hydraulic press; 63. Limiting plate; 64. Roller support; 65. Rolling wheel; 66. Third spring; 67. Pressure plate; 68. Second sliding column; 71. Slide table; 72. Extrusion table; 73. Rolling groove; 74. L-shaped connector; 75. Force-bearing frame; 76. Gasket; 81. Third connecting seat; 82. Second sliding rod; 83. Fourth spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-12 The present invention provides a technical solution: the metal sheet bending and forming device with automatic feeding and positioning includes a worktable 1, and the interior of the worktable 1 is provided with a U-shaped groove 11; The top of the workbench 1 is provided with two ejector components 3 distributed at ninety degrees, and the two ejector components 3 slide along the slide groove 11; Each ejector assembly 3 is provided with a positioning assembly 4 for fixing the workpiece at the top. The worktable 1 is provided with two sets of pressing assemblies 5 at the top. The worktable 1 is also provided with two sets of hydraulic assemblies 6 at the top. The two sets of hydraulic assemblies 6 are located at the top of both ends of the slide 11. The workpiece moves with the ejector assembly 3 and is pushed off the ejector assembly 3 when it passes the pressing assembly 5 on the return stroke. The pressing component 5 includes a second connecting seat 51 fixedly connected to the top of the workbench 1. A rotating shaft 53 is rotatably connected inside the second connecting seat 51. A triangular pressing block 52 is fixedly connected to one end of the rotating shaft 53 away from the second connecting seat 51. A limiting post 54 is fixedly connected to one side of the pressing block 52 near the second connecting seat 51. The limiting post 54 rests on the second connecting seat 51 under the gravity of the pressing block 52. The bottom of the lower pressure block 52 near the hydraulic component 6 is inclined, and the side of the lower pressure block 52 away from the hydraulic component 6 is vertical. When the positioning component 4 and the ejector component 3 move from the end of the slide 11 to halfway through the slide 11, the positioning component 4 will be squeezed by the lower pressure block 52. Since the limiting post 54 and the second connecting seat 51 form a one-way limiting, the positioning component 4 will move downward when it is subjected to the reverse force of the lower pressure block 52, so that the workpiece is pushed out of the positioning component 4. When the positioning component 4 and the unloading component 3 move from halfway down the slide 11 to the end of the slide 11, the positioning component 4 will push the vertical surface of the pressing block 52. In this direction, the limiting post 54 and the second connecting seat 51 will not limit the movement. At this time, the pressing block 52 will rotate around the pivot 53, allowing the positioning component 4 and the unloading component 3 to pass through the pressing component 5 normally. After the positioning component 4 and the unloading component 3 leave the pressing component 5, the pressing block 52 resets under the action of gravity.

[0021] In this embodiment, as Figure 1 , Figure 2 and Figure 8 As shown, a drive assembly 2 is provided at the center of the workbench 1. The drive assembly 2 includes a drive motor 21 fixedly connected to the top of the workbench 1 via a bracket. The output end of the drive motor 21 is connected to a drive shaft 27 via a coupling. One end of the drive shaft 27 movably passes through the workbench 1. The end of the drive shaft 27 located at the bottom of the workbench 1 is fixedly connected to two first slide rods 25 distributed at ninety degrees. Each first slide rod 25 corresponds to a set of unloading assembly 3 and positioning assembly 4. Each first slide rod 25 has a slide sleeve 26 slidably sleeved on its outer wall. The top of the slide sleeve 26 is rotatably connected to a first connecting seat 24. The top of the first connecting seat 24 is fixedly connected to a slider 23. The top of the slider 23 is fixedly connected to a base 22. The drive assembly 2 is used to drive the two first slide rods 25, and through the two first slide rods 25, it drives the two sets of unloading assemblies 3 and positioning assemblies 4 to move along the slide groove 11.

[0022] In this embodiment, as Figure 2 , Figure 3 and Figure 12 As shown, the unloading assembly 3 includes a first sliding column 34 fixedly connected to the four corners of the top of the drive assembly 2, a first spring 32 movably sleeved on the outer wall of the first sliding column 34, and a lifting block 33 fixedly connected to the top of the drive assembly 2. Lifting block 33 is used to push the workpiece upwards, so that the rolled workpiece is removed from the positioning component 4; As the base 22 passes the pressing component 5, the positioning component 4 moves relative to the base 22, pushing the workpiece on the positioning component 4 out, thereby quickly and automatically separating the rolled workpiece from the positioning component 4.

[0023] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, the positioning component 4 includes a placement platform 31 that is slidably connected to the first sliding column 34, and the workpiece is placed on the top of the placement platform 31. A limiting block 44 for limiting the workpiece is fixedly connected to the top of the placement platform 31. Fixed seats 41 are fixedly connected to both sides of the top of the placement platform 31. Two connecting rods 42 are slidably connected inside each fixed seat 41. The limiting block 44 is fixedly connected to the end of the two connecting rods 42 near the stop block 46, while a fixed plate 43 is fixedly connected to the end away from the stop block 46. Two second springs 45 abut against the limiting block 44 and the fixed seat 41, and the two second springs 45 are respectively sleeved on the two connecting rods 42. The placement platform 31 has an clearance groove 36 that is adapted to the lifting block 33. A protruding column 35 is fixedly connected to the opposite side of the placement platform 31. The first spring 32 provides a force that moves the placement platform 31 away from the base 22; The second spring 45 provides a force to the limiting block 44 in the direction away from the fixed seat 41, so that the two limiting blocks 44 clamp the workpiece and cooperate with the stop block 46 to position the workpiece on the placement table 31, so that the workpiece is moved to the processing position and then positioned to ensure processing accuracy and product quality after processing. The operator moves the workpiece from the drive motor 21 to a position halfway down the slide 11, thus fixing the workpiece on the placement table 31. The clearance groove 36 is used to avoid the upward lifting of the protrusion 35, so that the protrusion 35 can smoothly lift the workpiece. The protruding post 35 contacts the lower pressure block 52, so that when the base 22 moves, the protruding post 35 contacts the lower pressure block 52, thereby pressing down the placement table 31, causing the placement table 31 and the protruding post 35 to move relative to each other, and lifting the workpiece.

[0024] In this embodiment, as Figure 5 , Figure 10 and Figure 11 As shown, the hydraulic assembly 6 includes a hydraulic part and a limiting part. The hydraulic part includes a support platform 61 that is fixedly connected to both sides of the top of the workbench 1. A hydraulic press 62 is fixedly connected to the top of the support platform 61, and the output end of the hydraulic press 62 moves through the support platform 61. The hydraulic unit provides pressure to drive the limiting part to perform lifting and lowering actions, thereby achieving workpiece rolling. The limiting part is used to limit the position of the positioning component 4 to ensure that the base 22 and the positioning component 4 are not displaced when subjected to pressure during the rolling process.

[0025] In this embodiment, as Figure 10 , Figure 11 and Figure 12 As shown, the limiting part includes a limiting plate 63 fixedly connected to the output end of the hydraulic press 62, and the limiting plate 63 is L-shaped. A roller support 64 is fixedly connected to one side of the bottom of the limiting plate 63. A rolling wheel 65 is rotatably connected inside the roller support 64. A second sliding column 68 is slidably connected up and down inside the limiting plate 63. A pressure plate 67 is fixedly connected to the bottom of the second sliding column 68. A third spring 66 abuts between the bottom of the limiting plate 63 and the top of the pressure plate 67, and the third spring 66 is sleeved on the second sliding column 68. The side of the pressure plate 67 away from the stop block 46 is arc-shaped and used for extruding and rolling the workpiece into a circle. The third spring 66 provides a force that moves the limiting plate 63 away from the pressure plate 67; The limiting plate 63 is L-shaped, consisting of a horizontal plate and a vertical plate; As the output end of the hydraulic press 62 extends downward, the limiting plate 63 and the pressure plate 67 move downward synchronously. When the pressure plate 67 moves to the top of the workpiece, it applies pressure to the workpiece and stops moving. However, the limiting plate 63 continues to move downward against the force of the third spring 66, so that the horizontal plate of the limiting plate 63 blocks the stop block 46, thereby restricting the positioning component 4 and the unloading component 3 from sliding along the slide groove 11, thus stabilizing the workpiece rolling process.

[0026] In this embodiment, as Figure 6 , Figure 9 and Figure 12 As shown, the top two sides of the workbench 1 are provided with a rolling assembly 7. The rolling assembly 7 includes a load-bearing part and a rolling part. The load-bearing part includes a force-bearing frame 75 and a slide table 71 connected to the top of the workbench 1. The force-bearing frame 75 can be inserted between the base 22 and the pressure plate 67. The slide table 71 is used to guide the rolling part. like Figure 10 As shown, when the unloading assembly 3 and the positioning assembly 4 move to the end position of the slide 11, the force-bearing frame 75 is inserted between the base 22 and the pressure plate 67, so that when the pressure plate 67 moves down, the force is transmitted to the force-bearing frame 75 through the placement table 31, so as to avoid the workpiece being deformed by pressure during the rolling process.

[0027] In this embodiment, as Figure 6 , Figure 9 and Figure 12As shown, each rolling section includes an extrusion table 72 slidably connected to the slide table 71 and two L-shaped connectors 74 fixedly connected to the top of the worktable 1. The bottom of the extrusion table 72 is fixedly connected to the L-shaped connectors 74, and the bottom of the L-shaped connectors 74 is provided with a U-shaped groove. The side of the extrusion table 72 near the pressure plate 67 is provided with a rolling groove 73. like Figure 12 As shown, the top of the side of the extrusion table 72 away from the stop block 46 is inclined. When the rolling wheel 65 moves down with the limiting plate 63, the rolling wheel 65 pushes the inclined surface of the extrusion table 72, causing the extrusion table 72 to move closer to the pressure plate 67. The rolling groove 73 pushes one side of the workpiece, causing the edge of the workpiece to be squeezed and rolled along the arc groove of the rolling groove 73 and the pressure plate 67. At this time, the limiting plate 63 bears the force, preventing the unloading component 3 and the positioning component 4 at this position from being pushed by the lateral force, thereby ensuring the stability of the rolling process.

[0028] In this embodiment, as Figure 6 and Figure 9 As shown, each extrusion table 72 is provided with a reset assembly 8 at its bottom. The reset assembly 8 includes two third connecting seats 81. The two third connecting seats 81 are fixedly connected to a second slide rod 82 on opposite sides. An L-shaped connector 74 is inserted into the outer wall of the second slide rod 82 through a U-shaped groove at the bottom. A gasket 76 is abutted on the side of the L-shaped connector 74 near the pressure plate 67, and the gasket 76 is slidably sleeved on the second slide rod 82. A fourth spring 83 is abutted on the side of the gasket 76 away from the L-shaped connector 74, and the fourth spring 83 is sleeved on the second slide rod 82. The fourth spring 83 is used to provide a force to the extrusion table 72 away from the pressure plate 67, so that after the workpiece is rolled into a circle, the extrusion table 72 slides in the opposite direction to reset during the lifting of the rolling wheel 65.

[0029] The method of use and advantages of the present invention: The metal sheet bending and forming device with automatic feeding and positioning operates as follows: First, restore the device to its initial state. At this time, one set of positioning components 4 and unloading components 3 are located at half of the slide 11, and another set of positioning components 4 and unloading components 3 are located at one end of the slide 11. The operator places the workpiece on the placement platform 31 located at half of the slide 11, and positions and clamps the workpiece by two limit blocks 44 and stop blocks 46. Then, start the drive motor 21. As the output end of the drive motor 21 rotates, the drive shaft 27 drives the two first slide rods 25 to rotate synchronously, so that the placement platform 31, which was originally located at half of the slide 11, moves with the workpiece to another slide 11, while the other set of positioning components 4 and unloading components 3, which were originally located at the end, move to half of the slide 11. At this time, the personnel load the workpiece onto the placement platform 31 at half of the slide. As the workpiece, which was originally located at half of the slide 11, is driven by the drive motor 21 to move to the end of the slide 11, it will pass through the pressing component 5. The protrusion 35 will push against the vertical surface of the pressing block 52. At this time, the pressing block 52 is subjected to force and rotates around the pivot 53 to avoid the impact. When it moves to the end of the slide 11, that is, the bottom of the support platform 61, the slider 23 forms a limit with the inner wall of the end of the slide 11 to realize the positioning of the stroke of the positioning component 4 and the ejection component 3. At the same time, since the two first slide rods 25 are distributed at ninety degrees, the other set of positioning components 4 and ejection components 3 just stops at half the stroke of the slide 11. When the workpiece stops at the bottom of the support platform 61, the hydraulic press 62, which is linked to the drive motor 21 PLC, starts. The limit plate 63 and the pressure plate 67 move downward with the output end of the hydraulic press 62. The pressure plate 67 will first contact the top of the workpiece. The third spring 66 is gradually compressed and applies pressure from top to bottom to the workpiece to prevent warping deformation during the extrusion and rolling process. As it continues to move downward, the vertical plate of the limit plate 63 descends to the side of the stop block 46 to form a limit. Then the rolling wheel 65 abuts against the inclined surface of the extrusion table 72, causing the extrusion table 72 to move towards the pressure plate 67, so that the edge of the workpiece completes the rolling operation by extrusion along the rolling groove 73 and the arc groove. After the rolling is completed, the output end of the drive motor 21 is reset, the drive motor 21 is started in reverse, and the output end of the drive motor 21 rotates in reverse. The workpiece, the unloading assembly 3 and the positioning assembly 4 after the rolling is completed pass through the pressing assembly 5 again. At this time, the pressing block 52 forms a one-way limit through the limiting post 54 and the second connecting seat 51, so that when the protrusion 35 pushes the inclined surface of the pressing block 52, the pressing block 52 no longer rotates. And using the reaction force provided by the pressing block 52, the placement table 31 gradually descends along the inclined surface of the pressing block 52, so that the placement table 31 and the lifting block 33 rise and fall relative to each other, thereby pushing the workpiece out between the two limiting blocks 44. The workpiece is automatically unloaded by using the return process. When the unloading platform 31 returns to halfway down the slide 11, the rolled-up hinge can be directly removed and the unprocessed sheet metal workpiece can be placed back on. At the same time, another set of positioning components 4 and unloading components 3 located at the end of the slide 11 are located at the bottom of another support platform 61 to perform the rolling operation, so that loading and processing are synchronized, and the return process completes the unloading, which improves work efficiency. At the same time, the personnel loading and unloading operation positions are far away from the hydraulic forming position, ensuring operation safety during manual operation and improving production safety.

Claims

1. A metal sheet bending and forming device with automatic feeding and positioning, characterized in that, Includes a workbench (1), and the workbench (1) has a U-shaped groove (11) inside. The top of the workbench (1) is provided with two material ejection components (3) distributed at ninety degrees, and the two material ejection components (3) slide along the slide groove (11); Each of the ejector components (3) is provided with a positioning component (4) for fixing the workpiece at the top. The worktable (1) is provided with two sets of pressing components (5) at the top. The worktable (1) is also provided with two sets of hydraulic components (6) at the top. The two sets of hydraulic components (6) are located at the top of both ends of the slide (11). The workpiece moves with the ejector component (3) and is pushed off the ejector component (3) when it passes the pressing component (5) on the return stroke. The pressing assembly (5) includes a second connecting seat (51) fixedly connected to the top of the workbench (1). A rotating shaft (53) is rotatably connected inside the second connecting seat (51). A triangular pressing block (52) is fixedly connected to one end of the rotating shaft (53) away from the second connecting seat (51). A limiting post (54) is fixedly connected to one side of the pressing block (52) near the second connecting seat (51). The limiting post (54) rests on the second connecting seat (51) under the gravity of the pressing block (52).

2. The metal sheet bending and forming device with automatic feeding and positioning according to claim 1, characterized in that: The center of the workbench (1) is provided with a drive assembly (2). The drive assembly (2) includes a drive motor (21) fixedly connected to the top of the workbench (1) by a bracket. The output end of the drive motor (21) is connected to a drive shaft (27) by a coupling. One end of the drive shaft (27) moves through the workbench (1). The end of the drive shaft (27) located at the bottom of the workbench (1) is fixedly connected to two first slide rods (25) distributed at ninety degrees. Each first slide rod (25) corresponds to a set of unloading assembly (3) and positioning assembly (4). Each of the first slide rods (25) has a slide sleeve (26) slidably sleeved on its outer wall. The top of the slide sleeve (26) is rotatably connected to a first connecting seat (24). The top of the first connecting seat (24) is fixedly connected to a slider (23). The top of the slider (23) is fixedly connected to a base (22).

3. The metal sheet bending and forming device with automatic feeding and positioning according to claim 1, characterized in that: The unloading assembly (3) includes a first sliding column (34) fixedly connected to the four corners of the top of the drive assembly (2), a first spring (32) is movably sleeved on the outer wall of the first sliding column (34), and a lifting block (33) is fixedly connected to the top of the drive assembly (2).

4. The metal sheet bending and forming device with automatic feeding and positioning according to claim 1, characterized in that: The positioning component (4) includes a placement platform (31) that is slidably connected to the first sliding column (34) and the workpiece is placed on the top of the placement platform (31). A limiting block (44) for limiting the workpiece is fixedly connected to the top of the placement platform (31). Fixed seats (41) are fixedly connected to the top two sides of the placement platform (31). Two connecting rods (42) are slidably connected inside each fixed seat (41). The two connecting rods (42) are fixedly connected to the limiting block (44) at the end near the stop (46) and fixed plate (43) at the end away from the stop (46). Two second springs (45) abut against the limiting block (44) and the fixed seat (41). The two second springs (45) are respectively sleeved on the two connecting rods (42). The placement platform (31) has an clearance groove (36) that is adapted to the lifting block (33) inside. A protruding column (35) is fixedly connected to the opposite side of the placement platform (31).

5. A metal sheet bending and forming device with automatic feeding and positioning according to claim 1, characterized in that: The hydraulic assembly (6) includes a hydraulic part and a limiting part. The hydraulic part includes a support platform (61) fixedly connected to both sides of the top of the workbench (1). A hydraulic press (62) is fixedly connected to the top of the support platform (61), and the output end of the hydraulic press (62) moves through the support platform (61).

6. A metal sheet bending and forming device with automatic feeding and positioning according to claim 5, characterized in that: The limiting part includes a limiting plate (63) fixedly connected to the output end of the hydraulic press (62), and the limiting plate (63) is L-shaped. A roller support (64) is fixedly connected to one side of the bottom of the limiting plate (63). A rolling wheel (65) is rotatably connected inside the roller support (64). A second sliding column (68) is slidably connected up and down inside the limiting plate (63). A pressure plate (67) is fixedly connected to the bottom of the second sliding column (68). A third spring (66) abuts between the bottom of the limiting plate (63) and the top of the pressure plate (67), and the third spring (66) is sleeved on the second sliding column (68).

7. A metal sheet bending and forming device with automatic feeding and positioning according to claim 1, characterized in that: The workbench (1) is provided with a rolling assembly (7) on both sides of the top. The rolling assembly (7) includes a load-bearing part and a rolling part. The load-bearing part includes a force-bearing frame (75) and a slide (71) connected to the top of the workbench (1). The force-bearing frame (75) can be inserted between the base (22) and the pressure plate (67). The slide (71) is used to guide the rolling part.

8. A metal sheet bending and forming device with automatic feeding and positioning according to claim 7, characterized in that: Each of the rolled portions includes an extrusion table (72) slidably connected to the slide table (71) and two L-shaped connectors (74) fixedly connected to the top of the worktable (1). The bottom of the extrusion table (72) is fixedly connected to the L-shaped connectors (74), and the bottom of the L-shaped connectors (74) is provided with a U-shaped groove. The side of the extrusion table (72) near the pressure plate (67) is provided with a rolling groove (73).

9. A metal sheet bending and forming device with automatic feeding and positioning according to claim 8, characterized in that: Each of the pressing tables (72) is provided with a reset assembly (8) at its bottom. The reset assembly (8) includes two third connecting seats (81). The two third connecting seats (81) are fixedly connected to a second slide rod (82) on opposite sides. The L-shaped connector (74) is inserted into the outer wall of the second slide rod (82) through a U-shaped groove at its bottom. The side of the L-shaped connector (74) near the pressure plate (67) abuts against a gasket (76), and the gasket (76) is slidably sleeved on the second slide rod (82). The side of the gasket (76) away from the L-shaped connector (74) abuts against a fourth spring (83), and the fourth spring (83) is sleeved on the second slide rod (82).

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