Steel plate bending device

Abstract

The utility model discloses a steel plate bending device which comprises a machine frame, a vertically-moving bending head is arranged on the machine frame through a hydraulic jack, two supporting rollers are arranged below the bending head and symmetrically located on the two sides of the lower portion of the bending head, and an ejector block is arranged below the position between the two supporting rollers. The two supporting rollers are installed on the rack through a distance adjusting mechanism and used for adjusting the distance between the two supporting rollers. A mounting plate fixed to the rack is arranged below the ejector block, the ejector block is mounted on the mounting plate through a lifting mechanism, steel plates can be bent into V shapes of different sizes, die replacement is not needed, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate bending, and particularly relates to a steel plate bending device. Background Art

[0002] In the manufacture of metal products, a steel plate bending device is often used to bend a steel plate into a "V" shape.

[0003] The utility model of "a steel plate bending machine" with the patent number "CN216911644U" discloses the following: a frame for installing an upper die and a lower die; the lower die is fixed on the frame and includes a lower die head installed on the top of a lower die support; the upper die is movably installed on the frame and includes an upper die head installed on the bottom of an upper die support. The upper die support is hoisted on the frame by a spring, and a jack is fixed on the top of the upper die support. The ejector rod of the jack abuts against the frame. The utility model has a simple structure, is convenient and fast for manufacturing, assembling and handling, and can be used in plate bending.

[0004] The upper die head of the above patent extrudes the steel plate into the lower die head to form a "V" shape. However, the size of the "V" - shaped notch opened in the lower die head is fixed. When it is necessary to bend steel plates with different opening sizes, the entire lower die head needs to be replaced, which is time - consuming and laborious. Content of the Utility Model

[0005] In order to solve the deficiencies in the above - mentioned prior art, the utility model provides a steel plate bending device.

[0006] In order to achieve the above - mentioned technical effects, the utility model adopts the following scheme:

[0007] A steel plate bending device includes a frame. A vertically movable bending head is provided on the frame through a hydraulic jack. Below the bending head, there are two support rollers. The two support rollers are symmetrically located on both sides below the bending head. Below the two support rollers, there is a top block.

[0008] The two support rollers are installed on the frame through a distance adjusting mechanism for adjusting the distance between the two support rollers. Below the top block, there is a mounting plate fixed on the frame, and the top block is installed on the mounting plate through a lifting mechanism.

[0009] Preferred technical solution: The distance adjustment mechanism includes sliders. One slider is rotatably connected to each end of the two support rollers. The sliders are slidably mounted on the slide rails. The slide rails are horizontally arranged on the frame, and the length direction of the slide rails is parallel to the connection direction of the two slide rails. The two sliders at the same end of the support rollers are driven to move synchronously by a double-threaded screw rod. The double-threaded screw rod is arranged parallel to the slide rails and rotatably mounted on the frame. One end of the double-threaded screw rod is connected to a rotating handle. Corresponding threaded holes matching the two sections of threads of the double-threaded screw rod are respectively opened on the two sliders, and the two sliders are respectively mounted on the two ends of the double-threaded screw rod through the two threaded holes and move on the threads.

[0010] Preferred technical solution: The lifting mechanism includes a lifting cylinder. The lifting cylinder is vertically installed on the mounting plate, and the telescopic rod of the lifting cylinder faces upward and is fixedly connected to the lower end of the top block.

[0011] Preferred technical solution: The lower end of the top block vertically extends downward with a guide rod. A guide hole matching the guide rod is opened on the mounting plate, and the guide rod passes through the guide hole.

[0012] Preferred technical solution: A pressure sensor is installed on the upper end of the top block.

[0013] Preferred technical solution: Guide sleeves are respectively provided at both ends of the elbow. Guide columns matching the guide sleeves are vertically arranged on the frame, and the guide sleeves are sleeved on the guide columns and slide.

[0014] Preferred technical solution: The lower ends of springs are connected to both ends of the elbow, and the upper ends of the springs are connected to the frame.

[0015] Preferred technical solution: A baffle is respectively provided on both sides of the top block. The lower end of the baffle is hinged to the mounting plate. An inclined push cylinder is provided on the outer side of the baffle. The push cylinder is hinged to the mounting plate, and the telescopic rod of the push cylinder is hinged to the outer side surface of the baffle.

[0016] Compared with the prior art, the beneficial effects are as follows:

[0017] The utility model has a simple structure and is easy to use. The two support rollers and the lower top block form a "V" shape distribution. The steel plate to be bent is placed on the two support rollers. The hydraulic jack drives the elbow to descend to squeeze the middle part of the steel plate downward until it touches the top block, so as to squeeze the steel plate into a "V" shape; the distance between the two support rollers can be adjusted by the distance adjustment mechanism, so that the opening width after bending can be adjusted. The top block rises and falls under the drive of the lifting mechanism, and the depth of the opening after bending can be adjusted. Therefore, through the utility model, steel plates of different sizes of "V" shapes can be bent without changing the mold, which saves time and effort. Description of the Drawings

[0018] Figure 1 is the front view schematic diagram of the present utility model;

[0019] Figure 2 is Figure 1 the partial structural schematic diagram of;

[0020] Figure 3 is the side view structural schematic diagram of the present utility model;

[0021] Figure 4 is the partial side view structural schematic diagram of the present utility model in the using state.

[0022] Reference numerals: 1, frame; 2, elbow; 3, hydraulic jack; 4, support roller; 5, top block; 6, spring; 7, lifting cylinder; 8, guide rod; 9, slider; 10, double-threaded lead screw; 11, slide rail; 12, baffle; 13, pushing cylinder; 14, pressure sensor; 15, guide post; 16, guide sleeve; 17, mounting plate; 18, turning handle. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] A bending device for steel plates, comprising a frame 1, on which an elbow 2 moving vertically is provided through a hydraulic jack 3. The hydraulic jack 3 is fixedly installed at the upper end of the elbow 2, and the telescopic rod of the hydraulic jack 3 extends upward and is fixedly connected to the frame 1;

[0025] Below the elbow 2, two support rollers 4 are provided. The two support rollers 4 are both arranged parallel to the length direction of the elbow 2. The two support rollers 4 are symmetrically located on both sides below the elbow 2. Below the two support rollers 4, a top block 5 is provided. The two support rollers 4 and the lower top block 5 form a "V" shape distribution;

[0026] The two support rollers 4 are installed on the frame 1 through a distance adjusting mechanism for adjusting the distance between the two support rollers 4; below the top block 5, a mounting plate 17 fixed to the frame 1 is provided, and the top block 5 is installed on the mounting plate 17 through a lifting mechanism.

[0027] Place the steel plate to be bent on two support rollers 4. The hydraulic jack 3 drives the bending head 2 to descend and squeeze the middle part of the steel plate downward until it touches the top block 5, thereby squeezing the steel plate into a "V" shape. The distance between the two support rollers 4 can be adjusted by a distance adjustment mechanism, so that the opening width after bending can be adjusted. The top block 5 rises and falls driven by a lifting mechanism, and the depth of the opening after bending can be adjusted. Therefore, through the utility model, the steel plate can be bent into "V" shapes of different sizes without changing the mold, saving time and effort.

[0028] In a preferred technical solution, the distance adjustment mechanism includes a slider 9. One slider 9 is rotatably connected to each end of the two support rollers 4. The slider 9 is slidably mounted on a slide rail 11. The slide rail 11 is horizontally arranged on the frame 1. The length direction of the slide rail 11 is parallel to the connecting line direction of the two slide rails 11. The two sliders 9 at the same end of the support roller 4 are driven by a double-threaded lead screw 10 to move synchronously. The double-threaded lead screw 10 is arranged parallel to the slide rail 11 and is rotatably mounted on the frame 1. One end of the double-threaded lead screw 10 is connected to a turning handle 18. Corresponding threaded holes matching the two threads of the double-threaded lead screw 10 are respectively formed on the two sliders 9. The two sliders 9 are respectively mounted on the two ends of the double-threaded lead screw 10 through the two threaded holes and move on the two ends of the thread.

[0029] Rotate the double-threaded lead screw 10 through the turning handle 18, so as to adjust the two sliders 9 to move towards or away from each other along the slide rail 11, thereby driving the two support rollers 4 to approach or move away.

[0030] In a preferred technical solution, the lifting mechanism includes a lifting cylinder 7. The lifting cylinder 7 is vertically mounted on the mounting plate 17. The telescopic rod of the lifting cylinder 7 faces upward and is fixedly connected to the lower end of the top block 5.

[0031] In a preferred technical solution, a guide rod 8 vertically extends downward from the lower end of the top block 5. A guide hole matching the guide rod 8 is formed on the mounting plate 17. The guide rod 8 passes through the guide hole.

[0032] In a preferred technical solution, a pressure sensor 14 is mounted on the upper end of the top block 5.

[0033] When the bending head 2 presses down the steel plate to form a "V" shape and touches the upper end of the top block 5, after the pressure sensor 14 detects the pressure, the hydraulic jack 3 drives the bending head 2 to rise, avoiding the hydraulic jack 3 from pressing down excessively and applying a large pressure to the top block 5, which may damage the force-bearing mechanism below the top block 5.

[0034] In a preferred technical solution, guide sleeves 16 are respectively provided at both ends of the bending head 2. Guide columns 15 matching the guide sleeves 16 are vertically arranged on the frame 1. The guide sleeves 16 are sleeved on the guide columns 15 and slide thereon.

[0035] In a preferred technical solution, both ends of the elbow 2 are connected to the lower ends of the springs 6, and the upper ends of the springs 6 are connected to the frame 1.

[0036] When the hydraulic jack 3 drives the elbow 2 to press down, the spring 6 is stretched. When the hydraulic jack 3 drives the elbow 2 to rise, the elastic force of the spring 6 is used to pull the elbow 2 upward to assist in rising.

[0037] In a preferred technical solution, a baffle 12 is provided on each side of the top block 5. The lower end of the baffle 12 is hinged to the mounting plate 17. An inclined push cylinder 13 is provided on the outer side of the baffle 12. The push cylinder 13 is hinged to the mounting plate 17, and the telescopic rod of the push cylinder 13 is hinged to the outer side surface of the baffle 12.

[0038] The baffle 12 rotates under the drive of the push cylinder 13. When placing the steel plate, the baffle 12 rotates downward from the outer side direction, so as to facilitate placing the steel plate on the two support rollers 4. Then the two baffles 12 rotate upward toward the inner side direction and clamp the steel plate from both sides of the steel plate to prevent the steel plate from moving on the support rollers 4.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0041] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A bending device for a steel plate, characterized in that, It includes a frame (1), on which a vertically movable folding head (2) is provided through a hydraulic jack (3). Below the folding head (2), there are two support rollers (4). The two support rollers (4) are symmetrically located on both sides below the folding head (2). Below the two support rollers (4), there is a top block (5). The two support rollers (4) are installed on the frame (1) through a distance adjustment mechanism for adjusting the distance between the two support rollers (4). Below the top block (5), there is a mounting plate (17) fixed to the frame (1), and the top block (5) is installed on the mounting plate (17) through a lifting mechanism.

2. The bending device for steel plates according to claim 1, characterized in that, The distance adjustment mechanism includes sliders (9). At both ends of the two support rollers (4), there is a slider (9) rotatably connected. The slider (9) is slidably mounted on a slide rail (11). The slide rail (11) is horizontally arranged on the frame (1). The length direction of the slide rail (11) is parallel to the connecting line direction of the two slide rails (11). The two sliders (9) at the same end of the support roller (4) are driven to move synchronously by a double-threaded screw rod (10). The double-threaded screw rod (10) is arranged parallel to the slide rail (11) and is rotatably mounted on the frame (1). One end of the double-threaded screw rod (10) is connected with a turning handle (18). Corresponding threaded holes matching the two sections of the thread of the double-threaded screw rod (10) are respectively opened on the two sliders (9), and the two sliders (9) are respectively installed on the two ends of the thread of the double-threaded screw rod (10) through the two threaded holes and move.

3. The bending device for steel plates according to claim 1, characterized in that, The lifting mechanism includes a jacking cylinder (7). The jacking cylinder (7) is vertically installed on the mounting plate (17), and the telescopic rod of the jacking cylinder (7) faces upward and is fixedly connected to the lower end of the top block (5).

4. The bending device for steel plates according to claim 3, characterized in that, The lower end of the top block (5) extends vertically downward to be provided with a guide rod (8). A guide hole matching the guide rod (8) is opened on the mounting plate (17), and the guide rod (8) is arranged through the guide hole.

5. The bending device for steel plates according to claim 1, characterized in that, A pressure sensor (14) is installed on the upper end of the top block (5).

6. The bending device for steel plates according to claim 1, characterized in that, Guide sleeves (16) are respectively provided at both ends of the folding head (2). Guide columns (15) matching the guide sleeves (16) are vertically arranged on the frame (1), and the guide sleeves (16) are sleeved on the guide columns (15) and slide.

7. The bending device for steel plates according to claim 1, characterized in that, Both ends of the folding head (2) are connected to the lower ends of springs (6), and the upper ends of the springs (6) are connected to the frame (1).

8. The bending device for steel plates according to claim 1, characterized in that, A baffle (12) is respectively provided on both sides of the top block (5). The lower end of the baffle (12) is hinged to the mounting plate (17). An inclined pushing cylinder (13) is provided on the outer side of the baffle (12). The pushing cylinder (13) is hinged to the mounting plate (17), and the telescopic rod of the pushing cylinder (13) is hinged to the outer side surface of the baffle (12).

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