Efficient forming equipment and process for high-precision sheet metal structural part

Abstract

The invention relates to the technical field of sheet metal machining, in particular to efficient forming equipment and technology for a high-precision sheet metal structural part. The invention discloses efficient forming equipment for a high-precision sheet metal structural part. The efficient forming equipment comprises an outer mold mechanism, an inner mold mechanism and an adjusting mechanism. The outer mold mechanism comprises a bottom plate and a plurality of bending assemblies. Each bending assembly comprises a first forming rod, a second forming rod and a third forming rod. The plurality of first molding rods form a cavity. The inner mold mechanism comprises a polygonal frame. The outer mold mechanism has a first state and a second state. A plate is placed on the first forming rod, and the multilateral frame presses the plate into the cavity. The adjusting mechanism enables the outer mold mechanism to be converted into the second state from the first state, and the plate is bent and formed. During working, the plate does not need to move, and the forming precision is higher. And meanwhile, the four edges can be bent synchronously, so that the efficiency is higher. According to the efficient forming equipment and technology for the high-precision metal plate structural part, the problems that an existing bending machine is low in bending efficiency, and the forming precision is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, specifically to a high-efficiency forming equipment and process for high-precision sheet metal structural parts. Background Technology

[0002] Sheet metal forming equipment is a broad field encompassing mechanical equipment used to process metal sheets into desired shapes and sizes through shearing, stamping, bending, stretching, and other methods. A bending machine is a machine capable of bending thin sheets. Its structure mainly includes a support frame, a worktable, and a clamping plate. The worktable, placed on the support frame, consists of a base and a pressure plate. The base is connected to the clamping plate via a hinge and comprises a housing, a coil, and a cover plate. The coil is placed in a recess within the housing, which is covered by the cover plate. During operation, the coil is energized by a wire, generating electromagnetic force that attracts the pressure plate, thus clamping the sheet metal between the pressure plate and the base. Due to the use of electromagnetic clamping, the pressure plate can be manufactured into shapes suitable for various workpiece requirements, and it can also process workpieces with sidewalls. Operation is also very simple. The bending machine applies pressure to the sheet metal through an upper die (punch) and a lower die (V-groove), causing plastic deformation to obtain a predetermined angle and shape.

[0003] Existing bending equipment is difficult to bend sheets of different specifications (length and width) and thicknesses, usually requiring the replacement of different bending dies, resulting in poor adaptability. Near the bending angle, stress concentration occurs in the sheet material, along with minute tensile or compressive displacements, causing tensile deformation of the material and gradually leading to the accumulation of die wear.

[0004] For example, the invention patent with announcement number CN111775431B provides a bending machine that bends FPC board products during the rotation of the shaft by setting up a rotating shaft and bending components. However, this device needs to bend the FPC board one side at a time, which results in low bending efficiency. In addition, errors are easily introduced during the edge changing process due to repeated positioning, affecting the forming accuracy. Summary of the Invention

[0005] This invention provides a high-efficiency forming equipment and process for high-precision sheet metal structural parts, which solves the problems of existing bending machines that bend sheet metal edge by edge, resulting in low bending efficiency, affecting forming accuracy, and poor adaptability.

[0006] The present invention provides an efficient forming equipment and process for high-precision sheet metal structural parts, employing the following technical solution: The efficient forming equipment for high-precision sheet metal structural parts includes a support frame, an outer mold mechanism, an inner mold mechanism, and an adjustment mechanism. The outer mold mechanism includes a base plate and multiple bending components, with the base plate horizontally mounted on the support frame.

[0007] Each bending assembly includes a first forming rod, a second forming rod, and a third forming rod that are parallel to each other. The first forming rods in the multiple bending assemblies abut each other end-to-end, forming a cavity. The first, second, and third forming rods are all horizontally arranged triangular prisms. A rectangular side of the first forming rod is called the first side, a rectangular side of the second forming rod is called the second side, and a rectangular side of the third forming rod is called the third side. One side of the first side is hinged to the base plate. The other side of the first side is hinged to one side of the second side. One side of the third side is hinged to the other side of the second side.

[0008] The outer mold mechanism has a first state and a second state. In the first state, the first side, the second side, and the third side are on the same horizontal plane. In the second state, the second forming rod and the third forming rod are inside the cavity, the first side and the third side are vertically arranged, and the second side is horizontally arranged.

[0009] When the outer mold mechanism is in its first state, the sheet metal is placed horizontally on the first forming rod. The inner mold mechanism includes a polygonal frame that matches the cavity. The polygonal frame is slidably mounted on a support and is used to press the sheet metal into the cavity. An adjustment mechanism is used to change the outer mold mechanism from the first state to the second state, thereby bending and shaping the sheet metal.

[0010] Furthermore, each of the first forming rod, each of the second forming rod, and each of the third forming rods includes two movable blocks and at least one intermediate block. The intermediate block is located between the two movable blocks, and the intermediate block and the movable blocks move synchronously. The intermediate block is replaceable to change the length of the first forming rod, the second forming rod, and the third forming rod.

[0011] Furthermore, the adjusting mechanism includes a main hydraulic cylinder and multiple adjusting components. Each adjusting component corresponds to a bending component. Each adjusting component includes a first hydraulic cylinder, a second hydraulic cylinder, and a third hydraulic cylinder. The first hydraulic cylinder connects the base plate and the first forming rod. The second hydraulic cylinder connects the first forming rod and the second forming rod. The third hydraulic cylinder connects the second forming rod and the third forming rod.

[0012] The main hydraulic cylinder is vertically mounted on a support, with a base plate positioned above it and fixedly connected to its extended end. The main hydraulic cylinder contains hydraulic oil. It supplies oil to the first, second, and third hydraulic cylinders. When the pressure inside the main hydraulic cylinder reaches a first preset value, it drives the first hydraulic cylinder to extend. When the pressure inside the main hydraulic cylinder reaches a second preset value, it drives the second hydraulic cylinder to extend. When the pressure inside the main hydraulic cylinder reaches a third preset value, it drives the third hydraulic cylinder to extend. The first preset value is less than the second preset value, and the second preset value is less than the third preset value.

[0013] Furthermore, the number of bending components is four. Two of the first forming rods are distributed sequentially along a first direction and arranged along a second direction. The other two first forming rods are distributed sequentially along the second direction and arranged along the first direction. Both the first and second directions are horizontal and perpendicular to each other.

[0014] The base plate includes a first adjusting plate, two second adjusting plates, and two movable components. The two movable components are sequentially distributed along a first direction, and each movable component includes two support blocks sequentially distributed along a second direction. The two second adjusting plates are sequentially distributed along the first direction, and each second adjusting plate is positioned along the second direction. Each second adjusting plate and two support blocks in a movable component are slidably connected, and the second adjusting plate and the support blocks are capable of sliding relative to each other in the second direction. The first adjusting plate and the two second adjusting plates are slidably connected, and the first adjusting plate and the second adjusting plate are capable of sliding relative to each other in the first direction.

[0015] Furthermore, each second adjusting plate is fixedly provided with a first bidirectional threaded rod, which is arranged along a second direction. The two ends of the first bidirectional threaded rod are respectively threadedly engaged with two support blocks in each movable component. The first adjusting plate is provided with a second bidirectional threaded rod, which is arranged along a first direction. The two ends of the second bidirectional threaded rod are respectively threadedly engaged with two second adjusting plates.

[0016] Furthermore, each active block and each intermediate block includes two connecting blocks that can move closer to or further away from each other to adjust the size of the area enclosed by the first and second sides.

[0017] Furthermore, the outer mold mechanism includes a movable block, which is slidably mounted on the support. The movable block is located in the middle of the polygonal frame. The polygonal frame includes four L-shaped frames, two first connecting rods arranged sequentially along a second direction, and two second connecting rods arranged sequentially along the first direction. The first connecting rods are arranged along the first direction, and the second connecting rods are arranged along the second direction. The four L-shaped frames are arranged sequentially along the circumference of the movable block. The two ends of each first connecting rod abut against one end of the two L-shaped frames. The two ends of each second connecting rod abut against the other end of the two L-shaped frames.

[0018] Multiple fourth hydraulic cylinders are fixedly mounted on the movable block. The fourth hydraulic cylinders are vertically mounted. A fifth hydraulic cylinder is mounted on each L-shaped frame, each first connecting rod, and each second connecting rod. The fifth hydraulic cylinders are horizontally mounted and fixedly connected to the extended ends of the fourth hydraulic cylinders.

[0019] Furthermore, each L-shaped frame includes a first connecting frame and a second connecting frame distributed vertically. Each first connecting rod and each second connecting rod includes two fixed rods distributed vertically.

[0020] The outer mold mechanism also includes multiple vertically arranged sixth hydraulic cylinders, with each first connecting frame and each second connecting frame connected by a sixth hydraulic cylinder. Two vertically distributed fixed rods are connected by a sixth hydraulic cylinder.

[0021] Furthermore, the movable block includes a fixed block and two sliding blocks. A seventh hydraulic cylinder is vertically mounted on the support. The fixed block is fixedly mounted on the seventh hydraulic cylinder. The two sliding blocks are located on both sides of the fixed block along the first direction. The two sliding blocks can move closer to or further apart from each other.

[0022] An efficient forming process for high-precision sheet metal structural parts includes the following steps: S1, In the initial state, the outer mold mechanism is in the first state. The sheet metal is placed horizontally on the first forming rod, with the first side, second side, and third side all abutting against the sheet metal.

[0023] S2, the polygonal frame moves downward, enters the cavity, and presses the sheet into the cavity.

[0024] S3, the adjustment mechanism causes the outer mold mechanism to change from the first state to the second state, thereby bending the sheet metal into shape.

[0025] The beneficial effects of this invention are as follows: This invention provides a high-precision sheet metal structural component forming device, which comprises an outer mold mechanism, an inner mold mechanism, and an adjustment mechanism. Initially, the outer mold mechanism is in a first state. The sheet metal is placed horizontally on a first forming rod, with the first, second, and third sides abutting against the sheet metal. The polygonal frame moves downwards, entering the cavity and pressing the sheet metal into it. The adjustment mechanism changes the outer mold mechanism from the first state to the second state, thereby bending the sheet metal into shape. This high-precision sheet metal structural component forming device eliminates the need for sheet metal movement during bending, resulting in higher forming accuracy. Furthermore, all four sides can be bent simultaneously, further increasing efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a high-precision sheet metal structural component forming equipment provided in an embodiment of the present invention; Figure 2 This is a front view of a high-precision sheet metal structural part high-efficiency forming equipment provided in an embodiment of the present invention; Figure 3 for Figure 2 Sectional view along the middle AA direction; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 A cross-sectional view of the outer mold mechanism of a high-precision sheet metal structural part forming equipment provided in an embodiment of the present invention; Figure 6 An exploded view of the outer mold mechanism of a high-precision sheet metal structural part forming equipment provided in an embodiment of the present invention; Figure 7 This is a schematic diagram from another perspective of the outer mold mechanism of a high-precision sheet metal structural part forming equipment provided in an embodiment of the present invention; Figure 8 for Figure 6 Enlarged view of point C in the middle; Figure 9 A schematic diagram of the inner mold mechanism of a high-precision sheet metal structural part high-efficiency forming equipment provided in an embodiment of the present invention; Figure 10 A cross-sectional view of the inner mold mechanism of a high-precision sheet metal structural part forming equipment provided in an embodiment of the present invention; Figure 11 for Figure 10 Enlarged view of point D in the middle; Figure 12 This is a schematic diagram of the first state of the outer mold mechanism of a high-precision sheet metal structural part forming equipment provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of the inner mold mechanism after it has moved, which is provided in an embodiment of the present invention for a high-precision sheet metal structural part high-efficiency forming equipment.

[0028] In the diagram: 100, First forming rod; 101, First side surface; 102, Third connecting block; 103, Fourth connecting block; 104, Second screw; 110, Second forming rod; 111, Second side surface; 112, Seventh connecting block; 113, Eighth connecting block; 114, Fourth screw; 120, Third forming rod; 121, Third side surface; 200, Main hydraulic cylinder; 210, First hydraulic cylinder; 220, Second hydraulic cylinder; 230, Third hydraulic cylinder; 240, Telescopic rod; 300, Support block; 310, First adjusting plate; 311, Second bidirectional threaded rod; 320, Second adjusting plate; 321, First bidirectional threaded rod; 400, Moving block; 401. 402. Fixed block; 410. Sliding block; 411. L-shaped frame; 412. First connecting frame; 413. Second connecting frame; 420. First connecting rod; 421. First rounded corner rod; 422. First fixed rod; 423. Second fixed rod; 430. Second connecting rod; 431. Second rounded corner rod; 432. Third fixed rod; 433. Fourth fixed rod; 440. Fourth hydraulic cylinder; 450. Fifth hydraulic cylinder; 460. Sixth hydraulic cylinder; 470. Seventh hydraulic cylinder; 480. Fifth screw; 500. First movable block; 510. Second movable block; 520. Third movable block; 540. First intermediate block; 550. Second intermediate block; 560. Third intermediate block. Detailed Implementation

[0029] 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.

[0030] Reference Figures 1 to 13 As shown in the figure, an embodiment of the present invention provides a high-precision sheet metal structural part high-efficiency forming equipment, including a support, an outer mold mechanism, an inner mold mechanism, and an adjustment mechanism. The outer mold mechanism includes a base plate and multiple bending components, with the base plate horizontally mounted on the support; Each bending assembly includes a first forming rod 100, a second forming rod 110, and a third forming rod 120 that are parallel to each other; the first forming rods 100 in the multiple bending assemblies abut each other end to form a cavity. The first forming rod 100, the second forming rod 110, and the third forming rod 120 are all horizontally arranged triangular prisms. A rectangular side of the first forming rod 100 is called the first side 101, a rectangular side of the second forming rod 110 is called the second side 111, and a rectangular side of the third forming rod 120 is called the third side 121.

[0031] Each second forming rod 110 and each third forming rod 120 corresponds to a first forming rod 100 and is parallel to the corresponding first forming rod 100. One side of the first side 101 is hinged to the base plate. The other side of the first side 101 is hinged to one side of the second side 111. One side of the third side 121 is hinged to the other side of the second side 111.

[0032] The outer mold mechanism has a first state and a second state. In the first state, the first side 101, the second side 111, and the third side 121 are on the same horizontal plane. In the second state, the second forming rod 110 and the third forming rod 120 are inside the cavity, the first side 101 and the third side 121 are vertically arranged, and the second side 111 is horizontally arranged.

[0033] When the outer mold mechanism is in the first state, the sheet metal is placed horizontally on the first forming rod 100. The inner mold mechanism includes a polygonal frame that matches the cavity. The polygonal frame is slidably mounted on the support and is used to press the sheet metal into the cavity. The adjustment mechanism is used to change the outer mold mechanism from the first state to the second state, thereby bending and forming the sheet metal.

[0034] Initially, the outer mold mechanism is in its first state. The sheet metal is placed horizontally on the first forming rod 100, with the first side 101, second side 111, and third side 121 all abutting against the sheet metal. The polygonal frame moves downward, entering the cavity and pressing the sheet metal into it. An adjusting mechanism changes the outer mold mechanism from the first state to the second state, thereby bending the sheet metal into shape. This high-precision sheet metal structural part forming equipment eliminates the need for sheet metal movement during bending, resulting in higher forming accuracy. Furthermore, all four sides can be bent simultaneously, further increasing efficiency.

[0035] In this embodiment, there are four bending components; two first forming rods 100 are sequentially distributed along a first direction and arranged along a second direction. The other two first forming rods 100 are sequentially distributed along the second direction and arranged along the first direction. Both the first and second directions are horizontal and perpendicular to each other.

[0036] Each first forming rod 100 includes two first movable blocks 500 and at least one first intermediate block 540. The two first movable blocks 500 are distributed sequentially along the extension direction of the first forming rod 100. The first intermediate block 540 is located between the two first movable blocks 500. The first intermediate block 540 and the first movable blocks 500 move synchronously, and the first intermediate block 540 is replaceable.

[0037] Each second forming rod 110 includes two second movable blocks 510 and at least one second intermediate block 550. The two second movable blocks 510 are distributed sequentially along the extension direction of the second forming rod 110. The second intermediate block 550 is located between the two second movable blocks 510. The second intermediate block 550 and the second movable blocks 510 move synchronously, and the second intermediate block 550 is replaceable.

[0038] Each third forming rod 120 includes two third movable blocks 520 and at least one third intermediate block 560. The two third movable blocks 520 are distributed sequentially along the extension direction of the third forming rod 120. The third intermediate block 560 is located between the two third movable blocks 520. The third intermediate block 560 and the third movable blocks 520 move synchronously, and the third intermediate block 560 is replaceable.

[0039] In this embodiment, the adjustment mechanism includes a main hydraulic cylinder 200, multiple telescopic rods 240, multiple first hydraulic cylinders 210, multiple second hydraulic cylinders 220, and multiple third hydraulic cylinders 230. Each first hydraulic cylinder 210 is connected to a base plate and a first movable block 500. Each second hydraulic cylinder 220 is connected to an adjacent first movable block 500 and a second movable block 510. Each third hydraulic cylinder 230 is connected to an adjacent second movable block 510 and a third movable block 520.

[0040] The main hydraulic cylinder 200 is vertically mounted on a support, with a base plate positioned above it and fixedly connected to its extended end. The main hydraulic cylinder 200 contains hydraulic oil and is equipped with a first main oil pipe, a second main oil pipe, and a third main oil pipe. Multiple first auxiliary oil pipes are mounted on the first main oil pipe, each connected to a first hydraulic cylinder 210. Multiple second auxiliary oil pipes are mounted on the second main oil pipe, each connected to a second hydraulic cylinder 220. Multiple third auxiliary oil pipes are mounted on the third main oil pipe, each connected to a third hydraulic cylinder 230.

[0041] A first relief valve is installed in the first main oil pipe. When the pressure inside the main hydraulic cylinder 200 reaches a first preset value, the hydraulic oil inside the main hydraulic cylinder 200 is discharged through the first relief valve. When the pressure inside the main hydraulic cylinder 200 reaches a second preset value, the hydraulic oil inside the main hydraulic cylinder 200 is discharged through the second relief valve. When the pressure inside the main hydraulic cylinder 200 reaches a third preset value, the hydraulic oil inside the main hydraulic cylinder 200 is discharged through the third relief valve. The first preset value is less than the second preset value, and the second preset value is less than the third preset value. The telescopic rod 240 is vertically installed and connects the base plate and the bracket.

[0042] In this embodiment, the base plate includes a first adjusting plate 310, two second adjusting plates 320, and two movable components. The two movable components are distributed sequentially along a first direction, and each movable component includes two support blocks 300 distributed sequentially along a second direction. The two first movable blocks 500 in each first forming rod 100 are rotatably mounted on the two support blocks 300 and are located on the upper side of the first forming rod 100.

[0043] The second adjusting plate 320 is located below the support block 300. Two second adjusting plates 320 are sequentially distributed along a first direction. Each second adjusting plate 320 is arranged along a second direction. Each second adjusting plate 320 is slidably connected to two support blocks 300 in a movable assembly, and the second adjusting plate 320 and the support blocks 300 are capable of sliding relative to each other in the second direction.

[0044] The first adjusting plate 310 is located below the second adjusting plate 320. The first adjusting plate 310 and the two second adjusting plates 320 are slidably connected, and the first adjusting plate 310 and the second adjusting plate 320 can slide relative to each other in a first direction.

[0045] In this embodiment, a first bidirectional threaded rod 321 is fixedly disposed on each second adjusting plate 320, and the first bidirectional threaded rod 321 is disposed along a second direction. A first limiting block is disposed on each support block 300. The two first limiting blocks are respectively located at both ends of the first bidirectional threaded rod 321 and are threadedly engaged with the first bidirectional threaded rod 321.

[0046] The first adjusting plate 310 is provided with second bidirectional threaded rods 311 on both sides along the second direction, and the second bidirectional threaded rods 311 are arranged along the first direction. Each second adjusting plate 320 is provided with two second limiting blocks, which are distributed sequentially along the second direction. The two ends of each second bidirectional threaded rod 311 are respectively threadedly engaged with the second limiting blocks on the two second adjusting plates 320.

[0047] In this embodiment, each first movable block 500 includes a first connecting block and a second connecting block. The first connecting block and the second connecting block are connected by a first screw. The first connecting block and the second connecting block can move closer to or further away from each other. Each first intermediate block 540 includes a third connecting block 102 and a fourth connecting block 103. The third connecting block 102 and the fourth connecting block 103 are connected by a second screw 104. The third connecting block 102 and the fourth connecting block 103 can move closer to or further away from each other.

[0048] Each second movable block 510 includes a fifth connecting block and a sixth connecting block. The fifth and sixth connecting blocks are connected by a third screw. The fifth and sixth connecting blocks can move closer to or further away from each other. Each second intermediate block 550 includes a seventh connecting block 112 and an eighth connecting block 113. The seventh connecting block 112 and the eighth connecting block 113 are connected by a fourth screw 114. The seventh connecting block 112 and the eighth connecting block 113 can move closer to or further away from each other. The first connecting block, the third connecting block 102, the fifth connecting block, and the seventh connecting block 112 are all triangular prisms.

[0049] When the outer mold mechanism is in the second state, the first and second connecting blocks are distributed sequentially from top to bottom. The third connecting block 102 and the fourth connecting block 103 are distributed sequentially from top to bottom. The fifth and sixth connecting blocks are distributed sequentially in a direction gradually moving away from the cavity. The seventh connecting block 112 and the eighth connecting block 113 are distributed sequentially in a direction gradually moving away from the cavity.

[0050] In this embodiment, the outer mold mechanism includes a movable block 400, which is slidably mounted on a support. The movable block 400 is located in the middle of the polygonal frame. The polygonal frame includes four L-shaped frames 410, two first connecting rods 420 arranged sequentially along a second direction, and two second connecting rods 430 arranged sequentially along the first direction. The first connecting rods 420 are arranged along the first direction, and the second connecting rods 430 are arranged along the second direction. The four L-shaped frames 410 are arranged sequentially along the circumference of the movable block 400. The two ends of each first connecting rod 420 abut against one end of the two L-shaped frames 410. The two ends of each second connecting rod 430 abut against the other end of the two L-shaped frames 410.

[0051] Multiple fourth hydraulic cylinders 440 are fixedly mounted on the movable block 400. The fourth hydraulic cylinders 440 are vertically mounted. A fifth hydraulic cylinder 450 is mounted on each L-shaped frame 410, each first connecting rod 420, and each second connecting rod 430. The fifth hydraulic cylinder 450 is horizontally mounted and fixedly connected to the extended end of the fourth hydraulic cylinders 440.

[0052] In this embodiment, each L-shaped frame 410 includes a first connecting frame 411 and a second connecting frame 412. The first connecting frame 411 and the second connecting frame 412 are distributed sequentially from top to bottom. Each first connecting rod 420 includes a first fixing rod 422 and a second fixing rod 423. The first fixing rod 422 and the second fixing rod 423 are distributed sequentially from top to bottom. Each second connecting rod 430 includes a third fixing rod 432 and a fourth fixing rod 433. The third fixing rod 432 and the fourth fixing rod 433 are distributed sequentially from top to bottom.

[0053] Two first rounded corner rods 421 are provided on the upper surface of each first fixing rod 422 and each third fixing rod 432. The two first rounded corner rods 421 on the first fixing rod 422 are distributed sequentially along the second direction and are arranged along the first direction. The two first rounded corner rods 421 on the third fixing rod 432 are distributed sequentially along the first direction and are arranged along the second direction.

[0054] Each second fixing rod 423 and each fourth fixing rod 433 is provided with a second rounded corner rod 431 on the side near the plate. The second fixing rod 423 is arranged along a first direction, and the fourth fixing rod 433 is arranged along a second direction.

[0055] Both the first rounded corner rod 421 and the second rounded corner rod 431 have curved surfaces for contacting the sheet metal. The first rounded corner rod 421 forms the rounded corners of the first fixing rod 422 and the third fixing rod 432. The second rounded corner rod 431 forms the rounded corners of the second fixing rod 423 and the fourth fixing rod 433. The first rounded corner rod 421 and the second rounded corner rod 431 are replaceable to accommodate different rounded corner radii required by the sheet metal.

[0056] The outer mold mechanism also includes multiple vertically arranged sixth hydraulic cylinders 460, with each first connecting frame 411 and a second connecting frame 412 connected by a sixth hydraulic cylinder 460. Each first fixing rod 422 and a second fixing rod 423 are connected by a sixth hydraulic cylinder 460. Each third fixing rod 432 and a fourth fixing rod 433 are connected by a sixth hydraulic cylinder 460.

[0057] In this embodiment, the movable block 400 includes a fixed block 401 and two sliding blocks 402. A seventh hydraulic cylinder 470 is vertically mounted on the bracket. The fixed block 401 is fixedly mounted on the seventh hydraulic cylinder 470. At least one fifth screw 480 is rotatably mounted on the fixed block 401. The fifth screw 480 is arranged along a first direction. The two sliding blocks 402 are sequentially distributed along the first direction. The two sliding blocks 402 and the fifth screw 480 are threadedly engaged.

[0058] An efficient forming process for high-precision sheet metal structural parts includes the following steps: S1, In the initial state, the outer mold mechanism is in the first state. The first side 101, the second side 111, and the third side 121 are on the same plane.

[0059] S2, the sheet material is placed horizontally on the first forming rod 100, so that the first side 101, the second side 111, and the third side 121 are all in contact with the sheet material. Then, the seventh hydraulic cylinder 470 is activated, which drives the moving block 400 and the polygonal frame downwards. The polygonal frame enters the cavity and contacts the sheet material.

[0060] S3, after the polygonal frame contacts the base plate, the polygonal frame continues to move downwards, compressing the main hydraulic cylinder 200, and the pressure inside the main hydraulic cylinder 200 gradually increases. When the pressure inside the main hydraulic cylinder 200 reaches the first preset value, the hydraulic oil inside the main hydraulic cylinder 200 enters each first hydraulic cylinder 210 through the first overflow valve, the first main oil pipe, and the first auxiliary oil pipe. The first hydraulic cylinder 210 pushes the first movable block 500 to move, causing the first side 101 to change from a horizontal to a vertical state, bending the plate to form a vertically set first folded surface. The first movable block 500 drives the first intermediate block 540 to move synchronously. At this time, the second side 111 and the third side 121 are both parallel to the first side 101 and are both in a vertical state.

[0061] When the pressure inside the main hydraulic cylinder 200 reaches the second preset value, hydraulic oil enters each second hydraulic cylinder 220 through the second relief valve, the second main oil pipe, and the second auxiliary oil pipe. The second hydraulic cylinder 220 pushes the second movable block 510 to move, causing the second side surface 111 to change from a vertical state to a horizontal state, bending the first folded surface to form a horizontally set second folded surface. The second movable block 510 drives the second intermediate block 550 to move synchronously. At this time, the third side surface 121 and the second side surface 111 are arranged parallel to each other and are both in a horizontal state.

[0062] When the pressure inside the main hydraulic cylinder 200 reaches the third preset value, the hydraulic oil inside the main hydraulic cylinder 200 enters each third hydraulic cylinder 230 through the third relief valve, the third main oil pipe, and the third auxiliary oil pipe. The third hydraulic cylinder 230 pushes the third movable block 520 to move, causing the third side surface 121 to change from a horizontal state to a vertical state, performing a third bend on the second folded surface to form a vertically arranged third folded surface. The third movable block 520 drives the third intermediate block 560 to move synchronously. At this point, the outer mold mechanism is in the second state.

[0063] Next, the sixth hydraulic cylinder 460 is activated. Multiple sixth hydraulic cylinders 460 drive the second connecting frame 412 to move closer to the first connecting frame 411, the second fixing rod 423 to move closer to the first fixing rod 422, and the fourth fixing rod 433 to move closer to the third fixing rod 432. This allows the L-shaped frame 410, the first connecting rod 420, and the second connecting rod 430 to detach from the bent sheet metal.

[0064] The fifth hydraulic cylinder 450 is then activated to shorten the plate. The fifth hydraulic cylinder 450 drives the L-shaped frame 410, the first connecting rod 420, and the second connecting rod 430 to move closer to the fixed block 401, causing the L-shaped frame 410, the first connecting rod 420, the second connecting rod 430, and the bent plate to detach. Finally, the bent plate is removed, thus completing the entire bending process.

[0065] A high-precision sheet metal structural component forming equipment allows for bending of sheet metal without requiring the sheet to move, resulting in higher forming accuracy. Furthermore, all four edges can be bent simultaneously, further enhancing efficiency.

[0066] For plates of different thicknesses, the first screw, the second screw 104, the third screw, and the fourth screw 114 can be rotated. The first screw adjusts the distance between the first connecting block and the second connecting block, and the second screw 104 adjusts the distance between the third connecting block 102 and the fourth connecting block 103, thereby changing the height of the first side 101 when the outer mold mechanism is in the second state. Furthermore, the distance between the polygonal frame and the second folded surface can also be adjusted by adjusting the extension of the sixth hydraulic cylinder 460.

[0067] The third screw adjusts the distance between the fifth and sixth connecting blocks, and the fourth screw 114 adjusts the distance between the seventh and eighth connecting blocks 112 and 113. Simultaneously, adjusting the extension distance of the fifth hydraulic cylinder 450 adjusts the distance between the polygonal frame and the first and third folded surfaces.

[0068] For plates of different specifications (length and width), rotate the first bidirectional threaded rod 321 and the second bidirectional threaded rod 311. The second bidirectional threaded rod 311 adjusts the distance between the two first adjusting plates 310, thereby changing the distance between the two movable components. The first bidirectional threaded rod 321 adjusts the distance between the two support blocks 300 in each movable component. Then, replace the corresponding first intermediate block 540, second intermediate block 550, and third intermediate block 560 to form a new cavity.

[0069] For the new cavity, the polygonal frame needs to be adjusted accordingly. First, the fourth hydraulic cylinder 440, connected to the first connecting rod 420 and the second connecting rod 430, is activated, causing the first connecting rod 420 and the second connecting rod 430 to move upwards, thus disengaging the first connecting rod 420, the second connecting rod 430, and the L-shaped frame 410. Then, the first connecting rod 420 and the second connecting rod 430 are replaced with components adapted to the new specifications.

[0070] Next, the fifth hydraulic cylinder 450, connected to the L-shaped frame 410, is activated, and the fifth screw 480 is adjusted so that the two sliding blocks 402 move closer or further apart, thereby adjusting the four L-shaped frames 410 to a position matching the new cavity. Subsequently, the fifth hydraulic cylinder 450, connected to the first connecting rod 420 and the second connecting rod 430, is manipulated to adjust the new first connecting rod 420 and the second connecting rod 430 to a position corresponding to the new cavity. Finally, the replaced first connecting rod 420 and the second connecting rod 430 are moved downwards to re-engage with the L-shaped frame 410, completing all adjustments.

[0071] A high-precision sheet metal structural component forming equipment can bend sheets of different thicknesses and specifications, making it more adaptable.

[0072] 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, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency forming equipment for high-precision sheet metal structural parts, characterized in that: It includes a support frame, an outer mold mechanism, an inner mold mechanism, and an adjustment mechanism; the outer mold mechanism includes a base plate and multiple bending components, with the base plate horizontally mounted on the support frame; Each bending assembly includes a first forming rod, a second forming rod, and a third forming rod that are parallel to each other; the first forming rods in the multiple bending assemblies abut each other end to form a cavity; the first forming rod, the second forming rod, and the third forming rod are all horizontally arranged triangular prisms; a rectangular side of the first forming rod is the first side, a rectangular side of the second forming rod is the second side, and a rectangular side of the third forming rod is the third side; one side of the first side is hinged to the base plate; the other side of the first side is hinged to one side of the second side; one side of the third side is hinged to the other side of the second side. The outer mold mechanism has a first state and a second state. In the first state, the first side, the second side and the third side are on the same horizontal plane. In the second state, the second forming rod and the third forming rod are in the cavity, the first side and the third side are vertically arranged, and the second side is horizontally arranged. When the outer mold mechanism is in the first state, the sheet metal is placed horizontally on the first forming rod; the inner mold mechanism includes a polygonal frame that matches the cavity, the polygonal frame is slidably mounted on the support and is used to press the sheet metal into the cavity; the adjustment mechanism is used to change the outer mold mechanism from the first state to the second state, thereby bending the sheet metal into shape.

2. The high-precision sheet metal structural component high-efficiency forming equipment according to claim 1, characterized in that: Each first forming rod, each second forming rod, and each third forming rod includes two movable blocks and at least one intermediate block; the intermediate block is located between the two movable blocks, the intermediate block and the movable blocks move synchronously, and the intermediate block is replaceable to change the length of the first forming rod, the second forming rod, and the third forming rod.

3. The high-precision sheet metal structural component high-efficiency forming equipment according to claim 1, characterized in that: The adjustment mechanism includes a main hydraulic cylinder and multiple adjustment components; each adjustment component corresponds to a bending component; each adjustment component includes a first hydraulic cylinder, a second hydraulic cylinder, and a third hydraulic cylinder; the first hydraulic cylinder connects the base plate and the first forming rod; the second hydraulic cylinder connects the first forming rod and the second forming rod; the third hydraulic cylinder connects the second forming rod and the third forming rod. The main hydraulic cylinder is vertically mounted on a support, with the base plate positioned above it and fixedly connected to the extended end of the main hydraulic cylinder. The main hydraulic cylinder contains hydraulic oil. It supplies oil to the first, second, and third hydraulic cylinders. When the pressure inside the main hydraulic cylinder reaches a first preset value, it drives the first hydraulic cylinder to extend. When the pressure inside the main hydraulic cylinder reaches a second preset value, it drives the second hydraulic cylinder to extend. When the pressure inside the main hydraulic cylinder reaches a third preset value, it drives the third hydraulic cylinder to extend. The first preset value is less than the second preset value, and the second preset value is less than the third preset value.

4. The high-efficiency forming equipment for high-precision sheet metal structural parts according to claim 1, characterized in that: The number of bending components is four; two first forming rods are distributed sequentially along a first direction and set along a second direction; the other two first forming rods are distributed sequentially along the second direction and set along the first direction; the first direction and the second direction are both horizontal and perpendicular to each other; The base plate includes a first adjusting plate, two second adjusting plates, and two movable components; the two movable components are distributed sequentially along a first direction, and each movable component includes two support blocks distributed sequentially along a second direction; the two second adjusting plates are distributed sequentially along the first direction, and each second adjusting plate is arranged along the second direction; each second adjusting plate and two support blocks in a movable component are slidably connected, and the second adjusting plate and the support blocks can slide relative to each other in the second direction; The first adjusting plate and two second adjusting plates are slidably connected, and the first adjusting plate and the second adjusting plate can slide relative to each other in a first direction.

5. The high-efficiency forming equipment for high-precision sheet metal structural parts according to claim 4, characterized in that: Each second adjusting plate is fixedly provided with a first bidirectional threaded rod, which is arranged along a second direction; the two ends of the first bidirectional threaded rod are respectively threadedly engaged with two support blocks in each movable component; the first adjusting plate is provided with a second bidirectional threaded rod, which is arranged along a first direction; the two ends of the second bidirectional threaded rod are respectively threadedly engaged with two second adjusting plates.

6. The high-precision sheet metal structural component high-efficiency forming equipment according to claim 2, characterized in that: Each active block and each intermediate block includes two connecting blocks that can move closer or further apart to adjust the size of the area enclosed by the first and second sides.

7. The high-efficiency forming equipment for high-precision sheet metal structural parts according to claim 4, characterized in that: The outer mold mechanism includes a movable block, which is slidably mounted on a support. The movable block is located in the middle of a polygonal frame. The polygonal frame includes four L-shaped frames, two first connecting rods arranged sequentially along a second direction, and two second connecting rods arranged sequentially along a first direction. The first connecting rods are arranged along the first direction, and the second connecting rods are arranged along the second direction. The four L-shaped frames are arranged sequentially along the circumference of the movable block. The two ends of each first connecting rod abut against one end of the two L-shaped frames. The two ends of each second connecting rod abut against the other end of the two L-shaped frames. Multiple fourth hydraulic cylinders are fixedly installed on the movable block; the fourth hydraulic cylinders are vertically arranged; each L-shaped frame, each first connecting rod, and each second connecting rod is equipped with a fifth hydraulic cylinder; the fifth hydraulic cylinders are horizontally arranged and fixedly connected to the extended end of the fourth hydraulic cylinders.

8. The high-efficiency forming equipment for high-precision sheet metal structural parts according to claim 7, characterized in that: Each L-shaped frame includes a first connecting frame and a second connecting frame distributed vertically; each first connecting rod and each second connecting rod includes two fixed rods distributed vertically; the outer mold mechanism also includes multiple vertically arranged sixth hydraulic cylinders, with each first connecting frame and each second connecting frame connected by a sixth hydraulic cylinder; and two vertically distributed fixed rods connected by a sixth hydraulic cylinder.

9. The high-efficiency forming equipment for high-precision sheet metal structural parts according to claim 7, characterized in that: The movable block includes a fixed block and two sliding blocks; a seventh hydraulic cylinder is vertically mounted on the bracket; the fixed block is fixedly mounted on the seventh hydraulic cylinder; the two sliding blocks are located on both sides of the fixed block along the first direction; the two sliding blocks can move closer to or further away from each other.

10. A high-precision sheet metal structural component efficient forming process, utilizing the high-precision sheet metal structural component efficient forming equipment according to any one of claims 1-9, characterized in that, Includes the following steps: S1, In the initial state, the outer mold mechanism is in the first state; the sheet metal is placed horizontally on the first forming rod, and the first side, the second side, and the third side all abut against the sheet metal; S2, the polygonal frame moves downward, enters the cavity, and presses the sheet into the cavity; S3, the adjustment mechanism causes the outer mold mechanism to change from the first state to the second state, thereby bending the sheet metal into shape.

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