Flat steel cold-bending and hot-bending one-time forming device and method based on electric hydraulic pressure

Abstract

The invention relates to the technical field of hydraulic cold bending devices, in particular to a flat steel cold bending one-time forming device and method based on electric hydraulic pressure, and the device comprises a molding mechanism which comprises a lower supporting plate, an upper pressing plate and an overturning lifting assembly arranged between the upper pressing plate and the lower supporting plate; the upper pressing plate can be overturned and lifted through the overturning and lifting assembly, so that in the clamping or separating process of the upper pressing plate and the lower supporting plate, only the upper pressing plate needs to be overturned on the upper side of the lower supporting plate, and carrying is not needed. Under the cooperation of the clamping assembly and the locking assembly, the upper pressing plate and the lower supporting plate can be restrained and limited, operation is easy and fast, bolts do not need to be assembled and disassembled repeatedly, and the working efficiency is remarkably improved. And the two guide mechanisms are symmetrically arranged on the upper side of the bottom plate, under the cooperation of the two guide mechanisms, the flat steel part can be bent at a time, and the yield of finished products is remarkably increased.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic cold bending machines, and specifically, to a device and method for one-time cold bending and forming of flat steel based on electric hydraulics. Background Art

[0002] During the construction of electrical grounding laying, the common outdoor grounding bus is hot-dip galvanized flat steel. In on-site construction, cold fabrication of horizontal bends, right-angle bends, etc. of galvanized flat steel is required, with a large workload, and electric or manual hydraulic cold bending machines are often needed for processing. Among them, the electric hydraulic cold bending machine is a technical improvement based on the traditional manual tool for making flat steel bends. During construction, flat steel can be cold bent at one time to form various required bending shapes. It has the characteristics of low cost (compared with the traditional hot bending method, cold bending and one-time forming do not require heating equipment, saving energy and costs), high strength (the grounding flat steel after cold bending and forming has high strength and can bear large loads), and strong adaptability (it can be applied to grounding flat steel of various materials and specifications, such as carbon steel, stainless steel, etc.).

[0003] At present, during the process of bending flat steel by a hydraulic cold bending machine, it is necessary to press and limit the flat steel to be bent through an upper pressing plate. When the traditional upper pressing plate is installed, since the upper pressing plate and the lower supporting plate are in a completely separated state, it is necessary to connect and fix them to the lower supporting plate through multiple bolts. Whether it is the installation before bending work or the disassembly after bending is completed, the operation is relatively troublesome and inconvenient. It is necessary to repeatedly lift and carry the upper pressing plate, and repeatedly tighten or disassemble the bolts, with low work efficiency, which is not conducive to bending a large number of flat steel during on-site construction; secondly, in traditional bending work, only the flat steel pressed by the upper pressing plate has a limiting effect in the vertical direction, while the flat steel exposed on both sides of the upper pressing plate is often only supported by rotating columns to make it bend, lacking a limiting effect in the vertical direction, resulting in a decrease in the qualified rate of the bent finished products.

[0004] In view of this, the present invention proposes a device and method for one-time cold bending and forming of flat steel based on electric hydraulics. Summary of the Invention

[0005] The present invention proposes a device and method for one-time cold bending and forming of flat steel based on electric hydraulics, which solves the problems in the related art that the top plate of the hydraulic cold bending machine is not easy to install and disassemble, is not conducive to bending a large number of flat steel during on-site construction, and the flat steel exposed on both sides of the upper pressing plate lacks a limiting effect in the vertical direction, resulting in a decrease in the qualified rate of the bent finished products.

[0006] The technical solution of the present invention is as follows: A device for one-time cold bending and forming of flat steel based on electric hydraulics, comprising: A bottom plate, on which a plurality of insertion holes are symmetrically opened; The top plate is arranged parallel to the bottom plate above it. A plurality of limiting holes are penetrated and opened on the top plate, and the limiting holes are distributed in a one-to-one correspondence with the insertion holes; The shaping mechanism is arranged between the top plate and the bottom plate and is used for placing the flat steel parts to be bent; The electric hydraulic device is arranged on the upper side of the bottom plate and is used for pushing and pulling the shaping mechanism; The square column is fixedly connected to the top end of the bottom plate and is used for fixedly installing the electric hydraulic device; The connecting rod is arranged between the top plate and the square column, and one end of the connecting rod is hinged to the square column, and the other end of the connecting rod is fixedly connected to the top plate; Two guiding mechanisms are symmetrically and rotatably arranged on the upper side of the bottom plate. During the process of pushing the shaping mechanism by the electric hydraulic device, with the cooperation of the two guiding mechanisms, the flat steel parts can be bent at one time.

[0007] Preferably, the shaping mechanism includes: The lower supporting plate arranged on the upper side of the bottom plate. A connecting sleeve is fixedly connected to one end of the lower supporting plate close to the electric hydraulic device, and the hydraulic rod on the electric hydraulic device extends into the connecting sleeve and is detachably fixedly connected by bolts; An upper pressing plate is arranged on one side of the lower supporting plate. A flipping and lifting assembly is arranged between the upper pressing plate and the lower supporting plate, and the upper pressing plate can be flipped and lifted through the flipping and lifting assembly; A clamping component is arranged at one end of the upper pressing plate, and a locking component is arranged at one end of the lower supporting plate. With the cooperation of the clamping component and the locking component, the upper pressing plate and the lower supporting plate can be constrained and limited; A bending die is placed on the upper side of the lower supporting plate. A clamping groove is penetrated and opened on the bending die, and the bending die is clamped outside the connecting sleeve through the clamping groove.

[0008] Preferably, two inserting blocks are symmetrically and fixedly connected to the bottom of the bending die, and two inserting slots are symmetrically opened on the top of the lower supporting plate and are matched with the inserting blocks.

[0009] Preferably, the clamping component includes a right-angle part fixedly connected to the outer wall of the upper pressing plate, and a plurality of limiting slots are penetrated and opened on the surface of the right-angle part perpendicular to the upper pressing plate.

[0010] Preferably, the locking assembly includes a push-pull cavity opened in the interior of the lower support plate, a horizontal plate is slidably sleeved inside the push-pull cavity, a plurality of locking blocks matching the limiting grooves are fixedly connected to the outer wall of the horizontal plate, the locking blocks slide through the outer wall of the lower support plate, two levers are symmetrically fixedly connected to the outer wall of the horizontal plate, the levers slide through the outer wall of the lower support plate and are fixedly connected to a dial, each end of the locking block is fixedly connected to a limiting plug shaft, the limiting plug shaft slides and extends to the interior of the lower support plate, and a return spring is sleeved on the outside of each limiting plug shaft.

[0011] Preferably, the guide mechanism includes a guide frame and a vertical shaft fixedly connected to the guide frame, the bottom of the vertical shaft is rotatably inserted into the inner side of the plug-in hole, two clamping blocks are arranged in parallel on the inner side of the guide frame, a clamping groove for clamping the flat steel piece is formed between the two clamping blocks, two T-shaped grooves are symmetrically provided on the inner wall of the guide frame, one end of the clamping block is fixedly connected to a T-shaped slider matching the T-shaped groove, the side walls of the two clamping blocks are provided with pointers, and the side walls of the guide frame are provided with scale values ​​matching the pointers.

[0012] Preferably, the guide mechanism also includes an adjusting component for adjusting the positions of the two clamping blocks, the adjusting component includes a toggle cavity, a star-shaped wheel and a bidirectional screw, the bidirectional screw is rotatably connected to the inner side of the guide frame, the bidirectional screw thread passes through the inside of the clamping block, the toggle cavity is opened at the top of the guide frame, the star-shaped wheel is rotatably connected to the inside of the toggle cavity, and the star-shaped wheel is fixedly connected to the top end of the bidirectional screw.

[0013] Preferably, the flipping and lifting assembly includes a square seat and a rectangular frame symmetrically fixed to the outer wall of the square seat, the hydraulic rod on the electric hydraulic valve is fixed through the inside of the square seat, a limiting axis is vertically fixed on the inside of the rectangular frame, a lifting plate is slidably connected to the inside of the rectangular frame, the limiting axis slides through the inside of the lifting plate, a flip plate is fixed to one end of the upper pressure plate, and the flip plate and the lifting plate are rotatably connected via a rotating shaft.

[0014] Preferably, brake wheels are provided on both sides of the bottom of the base plate and on the bottom of one end of the electric hydraulic device away from the square column.

[0015] A one-step forming method for cold bending of flat steel based on electric hydraulic pressure comprises the following steps: Step 1: Before bending the flat steel pieces one by one, adjust the structure of the guide mechanism according to the thickness of the batch of flat steel pieces to be bent. By turning the star-shaped rotating wheel on the inner side of the turning cavity, the bidirectional screw rod rotates on the inner side of the guide frame, so that the spacing between the two clamping blocks can be adjusted to clamp and constrain the flat steel pieces. When adjusting the position of the clamping block, the position of the scale indicated by the pointer can be accurately judged; Step 2: Select a bending die that matches the flat steel piece to be bent, insert the plug block at the bottom into the inner side of the slot, clamp the bending die on the outer side of the connecting sleeve, place the flat steel piece to be bent on the upper side of the lower support plate, and clamp the flat steel piece between the two clamping blocks; Step 3: The upper pressing plate is flipped and covered on the upper side of the lower supporting plate through the rotating shaft and the flip plate. The upper pressing plate is set on the upper end of the bending mold. According to the bending molds of different models and thicknesses, the lifting plate can be slid on the limit shaft so that the upper pressing plate can always be placed stably to constrain the bending work of the flat steel piece. Step 4: When the upper pressure plate is flipped over to cover the top of the lower support plate, the upper pressure plate can be constrained and limited with the cooperation of the card assembly and the locking assembly. When the upper pressure plate is flipped to the horizontal and moved downward, the right-angle piece squeezes the locking block, so that the locking block drives the cross plate and the limiting plug shaft to slide inward, compressing the reset spring until the locking block is inserted into the limiting groove to complete the locking between the upper pressure plate and the lower support plate. According to the bending molds of different models and thicknesses, the locking blocks will be correspondingly inserted into the limiting grooves of different heights; Step 5, start the electric hydraulic device, the electric hydraulic device extends the hydraulic rod on it, and the hydraulic rod pushes the flip lifting assembly, the connecting sleeve, the upper pressure plate and the lower support plate to push forward. At this time, the middle part of the flat steel piece is pressed down and constrained by the upper pressure plate, and the two sides of the flat steel piece are constrained and guided by the guide mechanism. As the hydraulic rod is pushed forward, the middle part of the flat steel piece is bent, and the two guide mechanisms rotate accordingly with the vertical axis as the axis; Step 6: After the flat steel piece is bent, push the dial inward so that the lever pushes the cross plate inward, so that the locking block is pulled out of the limit groove, the upper pressure plate is flipped up, and the bent flat steel piece is taken out.

[0016] The working principle and beneficial effects of the present invention are: 1. In the present invention, a shaping mechanism is arranged between the top plate and the bottom plate, wherein the shaping mechanism comprises a lower support plate, an upper pressing plate, and a flipping and lifting assembly arranged between the upper pressing plate and the lower supporting plate, and the upper pressing plate can be flipped and lifted by the flipping and lifting assembly, so that in the process of engaging or separating the upper pressing plate and the lower supporting plate, it is only necessary to flip the upper pressing plate on the upper side of the lower supporting plate, without the need for carrying, which is time-saving, labor-saving, simple and quick; 2. In the present invention, the shaping mechanism further includes a positioning assembly arranged at one end of the upper pressing plate and a locking assembly arranged at one end of the lower supporting plate. With the cooperation of the positioning assembly and the locking assembly, the upper pressing plate and the lower supporting plate can be constrained and limited. The operation is simple and quick, and there is no need to repeatedly install and remove the bolts, which significantly improves the work efficiency. 3. In the present invention, the flipping and lifting assembly includes a square seat, a rectangular frame, a limiting shaft, a lifting plate and a flipping plate, and the flipping plate and the lifting plate are rotatably connected via a rotating shaft. The upper pressing plate is flipped and covered on the upper side of the lower supporting plate by the rotating shaft and the flipping plate, and the upper pressing plate is mounted on the upper end of the bending mold. According to the different types and thicknesses of the bending molds, the lifting plate can be slid on the limiting shaft so that the upper pressing plate can always be placed stably. In addition, the positioning assembly includes a right-angle piece fixed to the outer wall of the upper pressing plate, and a plurality of limiting grooves are provided through a side of the right-angle piece perpendicular to the upper pressing plate. When the upper pressing plate is flipped to a horizontal position and moved downward, the right-angle piece squeezes the locking block, and according to the different types and thicknesses of the bending molds, the locking block will be correspondingly inserted into the limiting grooves at different heights, thereby significantly improving the applicability of the device, and being able to meet the requirements of limiting and constraining the installation of different types of flat steel; 4. In the present invention, two guide mechanisms are symmetrically arranged on the upper side of the bottom plate. In the process of pushing the shaping mechanism by the electric hydraulic device, the flat steel piece can be bent at one time with the cooperation of the two guide mechanisms. Before bending the flat steel pieces one by one, the guide mechanism is structurally adjusted according to the thickness of the batch of flat steel pieces to be bent. By turning the star-shaped wheel on the inside of the turning cavity, the bidirectional screw is rotated on the inside of the guide frame, so that the distance between the two clamping blocks can be adjusted to clamp and constrain the flat steel piece. When adjusting the position of the clamping block, the position of the scale indicated by the pointer can be accurately judged. In the process of the hydraulic rod pushing, the middle part of the flat steel piece is bent, and the two guide mechanisms rotate accordingly with the vertical axis as the axis to constrain and guide the bending of the flat steel piece, which significantly improves the qualified rate of the bent finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 This is a diagram of the top plate in the flipped open state proposed by the present invention.

[0019] Figure 3 This is a schematic diagram of the structural composition of the molding mechanism proposed in the present invention.

[0020] Figure 4 This is a schematic diagram of the assembly structure of the molding mechanism proposed in the present invention.

[0021] Figure 5This is a diagram of the upper pressing plate proposed by the present invention being flipped open.

[0022] Figure 6 for Figure 4 Enlarged structural diagram at A in the middle.

[0023] Figure 7 for Figure 5 Enlarged structural diagram at B in the middle.

[0024] Figure 8 This is a schematic diagram of the structural composition of the guide mechanism proposed in the present invention.

[0025] Figure 9 This is a schematic diagram of the partial cross-sectional structure of the lower support plate proposed by the present invention.

[0026] Figure 10 for Figure 9 Enlarged structural diagram at point C in the middle.

[0027] Reference numerals: 1. Top plate; 101. Limiting hole; 2. Bottom plate; 201. Plug hole; 3. Brake wheel; 4. Flat steel parts; 5. Molding mechanism; 501. Upper pressing plate; 502. Positioning assembly; 5021. Positioning groove; 5022. Right-angle piece; 503. Positioning assembly; 5031. Push-pull cavity; 5032. Dial; 5033. Positioning block; 5034. Dial lever; 5035. Cross plate; 5036. Return spring; 5037. Positioning plug shaft; 504. Lower supporting plate; 505. Bending mold; 506. Connecting sleeve; 507. Turning lifting assembly; 5071. Square seat; 5072. Rectangular frame; 5073. Positioning shaft; 5074. Lifting plate; 5075. Turning plate; 5076. Rotating shaft; 508. Plug block; 509. Slot; 6. Electric hydraulic device; 7. Square column; 8. Connecting rod; 9. Guide mechanism; 901. Vertical shaft; 902. Guide frame; 903. Driving chamber; 904. Star-shaped rotating wheel; 905. Bidirectional screw rod; 906. T-shaped slide groove; 907. Pointer; 908. T-shaped slide block; 909. Clamping block. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1 Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A one - time forming device for cold bending flat steel based on electro - hydraulic pressure, comprising: a bottom plate 2, on which a plurality of plug - in holes 201 are symmetrically opened; a top plate 1 parallel to the upper side of the bottom plate 2, through which a plurality of limiting holes 101 are penetrated, and the limiting holes 101 and the plug - in holes 201 are distributed in a one - to - one correspondence; a shaping mechanism 5 arranged between the top plate 1 and the bottom plate 2 for placing the flat steel part 4 to be bent; an electro - hydraulic device 6 arranged on the upper side of the bottom plate 2 for pushing and pulling the shaping mechanism 5; a square column 7 fixedly connected to the top end of the bottom plate 2 for fixedly installing the electro - hydraulic device 6; a connecting rod 8 arranged between the top plate 1 and the square column 7, and one end of the connecting rod 8 is hinged to the square column 7, and the other end of the connecting rod 8 is fixedly connected to the top plate 1; two guiding mechanisms 9 symmetrically and rotatably arranged on the upper side of the bottom plate 2, during the process of pushing the shaping mechanism 5 by the electro - hydraulic device 6, with the cooperation of the two guiding mechanisms 9, the flat steel part 4 can be bent once. Brake wheels 3 are arranged on both sides of the bottom of the bottom plate 2 and at the bottom of one end of the electro - hydraulic device 6 far from the square column 7, which is convenient for moving and transporting the whole device.

[0030] Specifically, the shaping mechanism 5 includes a lower support plate 504 arranged on the upper side of the bottom plate 2. A connecting sleeve 506 is fixedly connected to one end of the lower support plate 504 close to the electro - hydraulic device 6, and the hydraulic rod on the electro - hydraulic device 6 extends into the connecting sleeve 506 and is detachably fixedly connected by bolts. One side of the lower support plate 504 is provided with an upper pressure plate 501, and a flipping and lifting assembly 507 is arranged between the upper pressure plate 501 and the lower support plate 504, and the upper pressure plate 501 can be flipped and lifted through the flipping and lifting assembly 507. One end of the upper pressure plate 501 is provided with a clamping component 502, and one end of the lower support plate 504 is provided with a locking component 503. With the cooperation of the clamping component 502 and the locking component 503, the upper pressure plate 501 and the lower support plate 504 can be constrained and limited.

[0031] Furthermore, a bending die 505 is arranged on the upper side of the lower support plate 504, and a card slot is penetrated through the bending die 505, and the bending die 505 is clamped outside the connecting sleeve 506 through the card slot. Specifically, two insertion blocks 508 are symmetrically and fixedly connected to the bottom of the bending die 505, and two slots 509 matched with the insertion blocks 508 are symmetrically opened on the top of the lower support plate 504.

[0032] In this embodiment, a bending die 505 that matches the flat steel part 4 to be bent is selected. The insertion block 508 at its bottom is inserted into the inner side of the slot 509, and the bending die 505 is clamped outside the connecting sleeve 506. The flat steel part 4 to be bent is placed on the upper side of the lower support plate 504, so that the flat steel part 4 is clamped between the two clamping blocks 909. When the upper pressure plate 501 is flipped and covered above the lower support plate 504, under the cooperation of the positioning component 502 and the locking component 503, the upper pressure plate 501 can be restricted and positioned. After the electric hydraulic actuator 6 is started, the electric hydraulic actuator 6 extends the hydraulic rod thereon, and the hydraulic rod pushes the flipping and lifting component 507, the connecting sleeve 506, the upper pressure plate 501 and the lower support plate 504 forward. At this time, the middle part of the flat steel part 4 is pressed and restricted by the upper pressure plate 501, and the two sides of the flat steel part 4 are restricted and guided by the guiding mechanism 9. As the hydraulic rod advances, the middle part of the flat steel part 4 is bent.

[0033] Embodiment 2 Please refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , a flat steel cold bending and one-time forming device based on electric hydraulic pressure, including all the contents of Embodiment 1. In addition, the positioning component 502 includes a right-angle part 5022 fixedly connected to the outer wall of the upper pressure plate 501. A plurality of limiting grooves 5021 are formed through the surface of the right-angle part 5022 perpendicular to the upper pressure plate 501.

[0034] Furthermore, the locking component 503 includes a push-pull cavity 5031 opened inside the lower support plate 504. A cross plate 5035 is slidably sleeved inside the push-pull cavity 5031. A plurality of locking blocks 5033 that cooperate with the limiting grooves 5021 are fixedly connected to the outer wall of the cross plate 5035. The locking blocks 5033 slide through the outer wall of the lower support plate 504. Two dial rods 5034 are symmetrically fixedly connected to the outer wall of the cross plate 5035. The dial rods 5034 slide through the outer wall of the lower support plate 504 and are fixedly connected to a dial plate 5032. A limiting insertion shaft 5037 is fixedly connected to the end of each locking block 5033. The limiting insertion shaft 5037 slides and extends into the lower support plate 504, and a return spring 5036 is sleeved outside each limiting insertion shaft 5037.

[0035] Further, the flipping and lifting assembly 507 includes a square seat 5071 and a rectangular frame 5072 symmetrically fixed to the outer wall of the square seat 5071. The hydraulic rod on the electro-hydraulic actuator 6 fixedly penetrates through the inside of the square seat 5071. A limiting shaft 5073 is vertically fixed inside the rectangular frame 5072. A lifting plate 5074 is slidably connected to the inside of the rectangular frame 5072. The limiting shaft 5073 slidably penetrates through the inside of the lifting plate 5074. One end of the upper pressing plate 501 is fixedly connected with a flipping plate 5075. The flipping plate 5075 is rotatably connected to the lifting plate 5074 through a rotating shaft 5076.

[0036] In this embodiment, the upper pressing plate 501 is flipped and covered on the upper side of the lower supporting plate 504 through the rotating shaft 5076 and the flipping plate 5075. The upper pressing plate 501 is placed on the upper end of the bending die 505. According to bending dies 505 of different models and thicknesses, the lifting plate 5074 can be slid on the limiting shaft 5073, so that the upper pressing plate 501 can always be placed stably, and the bending work of the flat steel part 4 can be restricted.

[0037] In this embodiment, when the upper pressing plate 501 is flipped and covered above the lower supporting plate 504, with the cooperation of the clamping component 502 and the locking component 503, the upper pressing plate 501 can be restricted and positioned. When the upper pressing plate 501 is flipped to the horizontal and the upper pressing plate 501 is moved downward, the right-angle part 5022 presses the locking block 5033, so that the locking block 5033 drives the cross plate 5035 and the limiting insertion shaft 5037 to slide inward, compressing the return spring 5036 until the locking block 5033 is inserted into the limiting groove 5021, completing the locking between the upper pressing plate 501 and the lower supporting plate 504. According to bending dies 505 of different models and thicknesses, the locking block 5033 will be inserted into the limiting grooves 5021 at different heights accordingly.

[0038] Embodiment 3 Please refer to Figure 3 、 Figure 4 、 Figure 8 、 Figure 9 and Figure 10 , a flat steel cold bending and one-time forming device based on electro-hydraulic, including all the contents of Embodiment 2. In addition, the guiding mechanism 9 includes a guiding frame 902 and a vertical shaft 901 fixedly connected to the guiding frame 902. The bottom of the vertical shaft 901 is rotatably inserted into the inside of the insertion hole 201. Two clamping blocks 909 are arranged in parallel inside the guiding frame 902. A clamping groove for clamping the flat steel part 4 is formed between the two clamping blocks 909. Two T-shaped sliding grooves 906 are symmetrically formed on the inner wall of the guiding frame 902. One end of the clamping block 909 is fixedly connected with a T-shaped sliding block 908 matched with the T-shaped sliding groove 906. Pointing marks 907 are arranged on the side walls of the two clamping blocks 909. A scale value matched with the pointing mark 907 is arranged on the side wall of the guiding frame 902.

[0039] Furthermore, the guide mechanism 9 also includes an adjusting component for adjusting the positions of the two clamping blocks 909, and the adjusting component includes a toggle cavity 903, a star-shaped rotating wheel 904 and a bidirectional screw 905. The bidirectional screw 905 is rotatably connected to the inner side of the guide frame 902, and the bidirectional screw 905 is threadedly passed through the interior of the clamping block 909. The toggle cavity 903 is opened at the top of the guide frame 902, and the star-shaped rotating wheel 904 is rotatably connected to the interior of the toggle cavity 903, and the star-shaped rotating wheel 904 is fixedly connected to the top of the bidirectional screw 905.

[0040] In this embodiment, before bending the flat steel pieces 4 one by one, the guide mechanism 9 is structurally adjusted according to the thickness of the batch of flat steel pieces 4 to be bent, and the star-shaped rotating wheel 904 is turned inside the turning cavity 903, so that the bidirectional screw rod 905 is rotated inside the guide frame 902, thereby adjusting the distance between the two clamping blocks 909, thereby clamping and constraining the flat steel pieces 4. When adjusting the position of the clamping block 909, an accurate judgment can be made by observing the scale position indicated by the pointer 907.

[0041] In this embodiment, during the advancement of the hydraulic rod, the middle portion of the flat steel piece 4 is bent, and the two guide mechanisms 9 are adapted to rotate around the vertical axis 901 to constrain and guide the bending of the flat steel piece 4.

[0042] Working principle and use process: Before bending the flat steel pieces 4 one by one, the guide mechanism 9 is structurally adjusted according to the thickness of the batch of flat steel pieces 4 to be bent, and the star-shaped rotating wheel 904 is toggled inside the toggle cavity 903, so that the bidirectional screw rod 905 rotates inside the guide frame 902, and then the spacing between the two clamping blocks 909 can be adjusted, and the flat steel piece 4 is clamped and constrained. When adjusting the position of the clamping block 909, the position of the scale indicated by the pointer 907 can be accurately judged. At the same time, a bending mold 505 matching the flat steel piece 4 to be bent is selected, and the insert block 508 at the bottom is inserted into the inner side of the slot 509, and the bending mold 505 is clamped on the outer side of the connecting sleeve 506, and the flat steel piece 4 to be bent is placed on the upper side of the lower support plate 504, so that the flat steel piece 4 is clamped between the two clamping blocks 909.

[0043] After that, the upper pressing plate 501 is flipped and covered on the upper side of the lower supporting plate 504 through the rotating shaft 5076 and the flipping plate 5075. The upper pressing plate 501 is placed on the upper end of the bending die 505. According to the bending die 505 of different models and thicknesses, the lifting plate 5074 can be slid on the limiting shaft 5073, so that the upper pressing plate 501 can always be placed stably, and the bending work of the flat steel part 4 can be restricted. When the upper pressing plate 501 is flipped and covered above the lower supporting plate 504, with the cooperation of the clamping component 502 and the locking component 503, the upper pressing plate 501 can be restricted and positioned. When the upper pressing plate 501 is flipped to the horizontal and the upper pressing plate 501 is moved downward, the right-angle part 5022 presses the locking block 5033, so that the locking block 5033 drives the cross plate 5035 and the limiting insertion shaft 5037 to slide inward, compressing the return spring 5036 until the locking block 5033 is inserted into the limiting groove 5021, completing the locking between the upper pressing plate 501 and the lower supporting plate 504. According to the bending die 505 of different models and thicknesses, the locking block 5033 will be inserted into the limiting grooves 5021 at different heights accordingly.

[0044] Then, start the electric hydraulic device 6. The electric hydraulic device 6 extends the hydraulic rod thereon. The hydraulic rod pushes the flipping and lifting assembly 507, the connecting sleeve 506, the upper pressing plate 501 and the lower supporting plate 504 forward. At this time, the middle part of the flat steel part 4 is pressed and restricted by the upper pressing plate 501, and the two sides of the flat steel part 4 are restricted and guided by the guiding mechanism 9. As the hydraulic rod advances, the middle part of the flat steel part 4 is bent, and the two guiding mechanisms 9 rotate adaptively with the vertical shaft 901 as the axis.

[0045] Finally, after the flat steel part 4 is bent, push the dial 5032 inward, so that the lever 5034 pushes the cross plate 5035 inward, so that the locking block 5033 is withdrawn from the limiting groove 5021, flip the upper pressing plate 501 upward, and take out the bent flat steel part 4.

[0046] It should be noted that the circuits, electronic components and modules involved in the present invention are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present invention does not involve the improvement of software and methods.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flat steel cold bending one-step forming device based on electric hydraulic pressure, characterized in that: include: A bottom plate (2), wherein a plurality of plug holes (201) are symmetrically provided on the bottom plate (2); A top plate (1) is arranged parallel to the bottom plate (2), and a plurality of limiting holes (101) are formed through the top plate (1), wherein the limiting holes (101) and the plug holes (201) are distributed in a one-to-one correspondence; A shaping mechanism (5) is arranged between the top plate (1) and the bottom plate (2) and is used to place the flat steel piece (4) to be bent; An electric hydraulic device (6) is arranged on the upper side of the bottom plate (2) and is used to push and pull the shaping mechanism (5); A square column (7) is fixedly connected to the top of the base plate (2) and is used for fixing and installing the electric hydraulic device (6); A connecting rod (8) is arranged between the top plate (1) and the square column (7), and one end of the connecting rod (8) is hinged to the square column (7), and the other end of the connecting rod (8) is fixedly connected to the top plate (1); Two guide mechanisms (9) are symmetrically and rotatably arranged on the upper side of the base plate (2). When the shaping mechanism (5) is pushed by the electric hydraulic device (6), the flat steel piece (4) can be bent at one time with the cooperation of the two guide mechanisms (9).

2. According to the electric hydraulic flat steel cold bending one-step forming device according to claim 1, it is characterized in that: The shaping mechanism (5) comprises: A lower support plate (504) is arranged on the upper side of the bottom plate (2), a connecting sleeve (506) is fixedly connected to one end of the lower support plate (504) close to the electric hydraulic device (6), and a hydraulic rod on the electric hydraulic device (6) extends into the interior of the connecting sleeve (506) and is detachably fixed by bolts; An upper pressing plate (501) is arranged on one side of the lower supporting plate (504), and a turning and lifting assembly (507) is arranged between the upper pressing plate (501) and the lower supporting plate (504), and the upper pressing plate (501) can be turned over and lifted by the turning and lifting assembly (507); A locking assembly (502) is provided at one end of the upper pressing plate (501), and a locking assembly (503) is provided at one end of the lower supporting plate (504); the upper pressing plate (501) and the lower supporting plate (504) can be constrained and limited by the cooperation of the locking assembly (502) and the locking assembly (503); A bending mold (505) is arranged on the upper side of the lower support plate (504), and a clamping slot is provided through the bending mold (505), and the bending mold (505) is clamped to the outer side of the connecting sleeve (506) through the clamping slot.

3. The one-step forming device for cold bending of flat steel based on electric hydraulic pressure according to claim 2 is characterized in that: The bottom of the bending mold (505) is symmetrically fixed with two plug blocks (508), and the top of the lower support plate (504) is symmetrically provided with two slots (509) that match the plug blocks (508).

4. The one-step forming device for cold bending of flat steel based on electric hydraulic pressure according to claim 3 is characterized in that: The locking assembly (502) comprises a right-angle piece (5022) fixedly connected to the outer wall of the upper pressing plate (501), and a plurality of limiting grooves (5021) are formed through a surface of the right-angle piece (5022) perpendicular to the upper pressing plate (501).

5. The one-step forming device for cold bending of flat steel based on electric hydraulic pressure according to claim 4 is characterized in that: The locking assembly (503) comprises a push-pull cavity (5031) opened inside the lower support plate (504), a horizontal plate (5035) is slidably sleeved inside the push-pull cavity (5031), a plurality of locking blocks (5033) matched with the limiting grooves (5021) are fixedly connected to the outer wall of the horizontal plate (5035), the locking blocks (5033) slidably penetrate the outer wall of the lower support plate (504), and the horizontal plate (5035) Two levers (5034) are symmetrically fixed to the outer wall, the levers (5034) slide through the outer wall of the lower support plate (504) and are fixed to a dial (5032), the end of each locking block (5033) is fixed to a limiting plug shaft (5037), the limiting plug shaft (5037) slides and extends to the inside of the lower support plate (504), and a return spring (5036) is sleeved on the outside of each limiting plug shaft (5037).

6. The one-step forming device for cold bending of flat steel based on electric hydraulic pressure according to claim 5 is characterized in that: The guide mechanism (9) comprises a guide frame (902) and a vertical shaft (901) fixedly connected to the guide frame (902); the bottom of the vertical shaft (901) is rotatably inserted into the inner side of the plug hole (201); two clamping blocks (909) are arranged in parallel on the inner side of the guide frame (902); a clamping groove for clamping the flat steel piece (4) is formed between the two clamping blocks (909); two T-shaped sliding grooves (906) are symmetrically arranged on the inner wall of the guide frame (902); one end of the clamping block (909) is fixedly connected to a T-shaped sliding block (908) matched with the T-shaped sliding groove (906); the side walls of the two clamping blocks (909) are both provided with a pointer (907); and the side wall of the guide frame (902) is provided with a scale value matched with the pointer (907).

7. The one-step forming device for cold bending of flat steel based on electric hydraulic pressure according to claim 6 is characterized in that: The guide mechanism (9) further comprises an adjusting component for adjusting the positions of the two clamping blocks (909), the adjusting component comprising a toggle cavity (903), a star-shaped rotating wheel (904) and a bidirectional screw (905), the bidirectional screw (905) being rotatably connected to the inner side of the guide frame (902), the bidirectional screw (905) being threadedly passed through the interior of the clamping block (909), the toggle cavity (903) being opened at the top of the guide frame (902), the star-shaped rotating wheel (904) being rotatably connected to the interior of the toggle cavity (903), and the star-shaped rotating wheel (904) being fixedly connected to the top end of the bidirectional screw (905).

8. The one-step forming device for cold bending of flat steel based on electric hydraulic pressure according to claim 7 is characterized in that: The overturning and lifting assembly (507) comprises a square seat (5071) and a rectangular frame (5072) symmetrically fixedly connected to the outer wall of the square seat (5071); the hydraulic rod on the electric hydraulic device (6) is fixedly connected and passes through the inside of the square seat (5071); a limit axis (5073) is vertically fixedly connected to the inside of the rectangular frame (5072); a lifting plate (5074) is slidably connected to the inside of the rectangular frame (5072); the limit axis (5073) slidably passes through the inside of the lifting plate (5074); a turning plate (5075) is fixedly connected to one end of the upper pressure plate (501); and the turning plate (5075) and the lifting plate (5074) are rotatably connected via a rotating shaft (5076).

9. The one-step forming device for cold bending of flat steel based on electric hydraulic pressure according to claim 8, characterized in that: Braking wheels (3) are provided on both sides of the bottom of the base plate (2) and at the bottom of one end of the electric hydraulic device (6) away from the square column (7).

10. A one-step forming method for cold bending of flat steel based on electric hydraulic pressure, using a one-step forming device for cold bending of flat steel based on electric hydraulic pressure as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Before bending the flat steel pieces (4) one by one, the guide mechanism (9) is structurally adjusted according to the thickness of the batch of flat steel pieces (4) to be bent, and the star-shaped rotating wheel (904) is toggled inside the toggle cavity (903), so that the bidirectional screw rod (905) is rotated inside the guide frame (902), thereby adjusting the spacing between the two clamping blocks (909), clamping and restraining the flat steel piece (4), and when adjusting the position of the clamping block (909), the position of the scale indicated by the pointer (907) can be accurately judged; Step 2: Select a bending die (505) that matches the flat steel piece (4) to be bent, insert the insert block (508) at the bottom thereof into the inner side of the slot (509), and clamp the bending die (505) on the outer side of the connecting sleeve (506), and place the flat steel piece (4) to be bent on the upper side of the lower support plate (504), so that the flat steel piece (4) is clamped between the two clamping blocks (909); Step 3: The upper pressing plate (501) is flipped and covered on the upper side of the lower supporting plate (504) by the rotating shaft (5076) and the flip plate (5075). The upper pressing plate (501) is placed on the upper end of the bending mold (505). According to the different models and thicknesses of the bending mold (505), the lifting plate (5074) can be slid on the limit shaft (5073) so that the upper pressing plate (501) can always be placed stably to constrain the bending work of the flat steel piece (4); Step 4: When the upper pressing plate (501) is turned over to cover the upper part of the lower supporting plate (504), the upper pressing plate (501) can be constrained and limited by the cooperation of the locking assembly (502) and the locking assembly (503). When the upper pressing plate (501) is turned over to a horizontal position and moved downward, the right-angle piece (5022) squeezes the locking block (5033), so that the locking block (5033) drives the cross plate (5035) and the limiting plug shaft (5037) slide inward to compress the return spring (5036) until the locking block (5033) is inserted into the limiting groove (5021), thereby completing the locking between the upper pressing plate (501) and the lower supporting plate (504). According to the different models and thicknesses of the bending mold (505), the locking block (5033) will be correspondingly inserted into the limiting groove (5021) of different heights; Step 5, start the electric hydraulic device (6), the electric hydraulic device (6) extends the hydraulic rod thereon, and the hydraulic rod pushes the flip lifting assembly (507), the connecting sleeve (506), the upper pressing plate (501) and the lower supporting plate (504) to push forward. At this time, the middle part of the flat steel piece (4) is pressed down and constrained by the upper pressing plate (501), and the two sides of the flat steel piece (4) are constrained and guided by the guide mechanism (9). As the hydraulic rod is pushed forward, the middle part of the flat steel piece (4) is bent, and the two guide mechanisms (9) rotate in a corresponding manner with the vertical shaft (901) as the axis. Step 6: After the flat steel piece (4) is bent, the dial (5032) is pushed inwardly, so that the lever (5034) pushes the cross plate (5035) inwardly, so that the locking block (5033) is pulled out from the limit groove (5021), and the upper pressing plate (501) is turned up to take out the bent flat steel piece (4).

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