A metal pipe bending device

Abstract

The application discloses a metal pipe bending device, in particular to the technical field of metal pipe bending, which comprises a mounting table, a first hydraulic cylinder is arranged in the inner cavity of a mounting box connected to the mounting table, a passive bending assembly is fixedly arranged on the top of the piston rod of the first hydraulic cylinder, a limiting assembly is arranged on one side of the passive bending assembly, and an active bending assembly is fixedly arranged on the piston rod of a second hydraulic cylinder; the passive bending assembly comprises a lifting seat fixedly connected with the piston rod of the first hydraulic cylinder, a mounting seat is arranged on the top of the lifting seat, a plurality of stacked layer plates are arranged on the top of the mounting seat, passive wheels are horizontally and rotatably arranged between the layer plates and between the mounting seat and the layer plates, the diameters of the passive wheels are different, the passive wheels are tangent to two mutually perpendicular vertical planes at the same time, and the passive wheels are arranged at one corner of the layer plates matched with the active bending assembly; the arrangement of the plurality of passive wheels enables the single metal pipe bending device to quickly complete the multiple round corner bending of a single metal pipe.

Description

Technical Field

[0001] This utility model belongs to the field of metal tube bending technology, and specifically relates to a metal tube bending device. Background Technology

[0002] A metal pipe bending device is a mechanical device used to bend metal pipes at a predetermined angle, commonly found in industries such as construction and manufacturing. It uses mechanical force to bend the metal pipe into shape on a set mold, and common types include manual, hydraulic, and CNC. This type of equipment can efficiently and accurately complete bending work at various complex angles, improving construction efficiency and product quality. When using it, factors such as pipe diameter, wall thickness, and material must be considered to select appropriate bending parameters.

[0003] Existing metal tube bending devices typically only have one passive roller for auxiliary rounded corner bending, allowing the metal tube to bend to a fixed radius. If a single metal tube needs to be bent to a radius of different sizes, the passive roller must be disassembled or the tube must be bent multiple times on different bending devices, resulting in low production efficiency. Therefore, a new type of metal tube bending device is needed. Utility Model Content

[0004] To solve the above problems, this utility model discloses a metal tube bending device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A metal tube bending device includes a mounting platform. A vertically downward mounting box is fixedly connected to the end notch of the mounting platform. A vertical first hydraulic cylinder is installed inside the mounting box. A passive bending component, which is adapted to both the inner cavity of the mounting box and the notch of the mounting platform, is fixedly installed on the top of the piston rod of the first hydraulic cylinder. A limiting component adapted to the passive bending component is provided on one side of the passive bending component. A horizontal second hydraulic cylinder is fixedly installed on the mounting platform, and an active bending component adapted to the passive bending component is fixedly installed on the piston rod of the second hydraulic cylinder. The passive bending component includes a lifting seat fixedly connected to the piston rod of the first hydraulic cylinder. A mounting base is installed on the top of the lifting seat. Stacked shelves are installed on the top of the mounting base. Passive wheels are horizontally rotatably installed between the shelves and between the mounting base and the shelves. Several passive wheels have different diameters and are simultaneously tangent to two mutually perpendicular vertical planes. Several passive wheels are located at a corner of the shelf adapted to the active bending component. Several fixing bolts are threadedly connected to the mounting base, and the fixing bolts simultaneously penetrate all the shelves.

[0007] As a preferred embodiment of this utility model, the lifting seat is threaded with a number of mounting bolts, and the mounting bolts all penetrate the mounting seat.

[0008] As a preferred embodiment of this utility model, the mounting base or shelf extends through the fixed shaft passing through the passive wheel axle and is simultaneously inserted into the circular hole of the shelf above it.

[0009] As a preferred embodiment of the present invention, the active bending assembly includes a connecting seat fixedly connected to the piston rod of the second hydraulic cylinder. A splicing block is vertically inserted into the square column of the connecting seat, and the rotating shaft of the splicing block is inserted into the end round hole of the connecting seat. The rotating shaft of the splicing block is rotatably connected to an active wheel, and a connecting bolt penetrating the splicing block is threadedly connected to the square column of the connecting seat.

[0010] As a preferred embodiment of this utility model, both the passive wheel and the active wheel are provided with annular grooves adapted to the diameter of the metal tube.

[0011] As a preferred technical solution of this utility model, the limiting component includes a fixed base fixedly connected to the top of the mounting platform, a limiting block is vertically slidably inserted into the fixed base on the side facing the passive bending component, and a rod is slidably inserted into the fixed base at an angle, with the rod part inserted into the limiting block.

[0012] As a preferred technical solution of this utility model, the limiting block is provided with a semi-circular groove adapted to the diameter of the metal tube, and the two ends of the semi-circular groove are provided with rounded corners to facilitate the insertion of the metal tube.

[0013] As a preferred embodiment of this utility model, the second hydraulic cylinder is fitted with a plug-in seat, and the plug-in seat is fixedly connected to the mounting platform.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The passive bending assembly of this application is equipped with multiple passive wheels of different diameters. Under the quantitative lifting and lowering of the piston rod of the first hydraulic cylinder, the passive wheel of the required diameter can be kept on the same plane as the active wheel, so that the active wheel and the passive wheel can cooperate to perform bending processing on the metal tube. Thanks to the setting of multiple passive wheels, a single metal tube bending device can quickly complete various rounded corner bends on a single metal tube, improving the bending efficiency of the metal tube. Thanks to the fact that several passive wheels are simultaneously tangent to two mutually perpendicular vertical planes, the bending of the metal tube can be completed by driving the active bending assembly to move linearly in only one direction, reducing the setting of the device power unit.

[0016] Second, the passive wheel, active wheel, and limiting block of this application are all replaceable designs. The annular groove of the passive wheel and active wheel and the semi-circular groove of the limiting block are all adapted to the diameter of the metal tube and can be replaced according to the diameter of the metal tube, so that the metal tube fits the annular groove and semi-circular groove as closely as possible when bending, thereby improving the bending accuracy of the metal tube. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of the passive bending assembly according to an embodiment of the present invention;

[0019] Figure 3 This is a top view of the passive wheel in an embodiment of the present invention;

[0020] Figure 4 This is an exploded view of the active bending component according to an embodiment of the present invention;

[0021] Figure 5 This is a limiting component for a limiting component in an embodiment of the present utility model.

[0022] List of identifiers in attached diagrams:

[0023] 1. Mounting platform; 2. Mounting box; 3. First hydraulic cylinder;

[0024] 4. Passive bending assembly; 401. Lifting seat; 402. Mounting seat; 403. Shelf; 404. Passive wheel; 405. Fixing bolt; 406. Mounting bolt;

[0025] 5. Limiting component; 501. Fixing base; 502. Limiting block; 503. Insert rod;

[0026] 6. Plug-in connector; 7. Second hydraulic cylinder;

[0027] 8. Active bending assembly; 801. Connecting seat; 802. Drive wheel; 803. Splicing block; 804. Connecting bolt. Detailed Implementation

[0028] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0029] Please see Figure 1-5 A metal tube bending device includes a mounting platform 1. A vertically downward mounting box 2 is fixedly connected to the end notch of the mounting platform 1. A vertical first hydraulic cylinder 3 is installed inside the mounting box 2. A passive bending component 4, which is adapted to both the inner cavity of the mounting box 2 and the notch of the mounting platform 1, is fixedly installed on the top of the piston rod of the first hydraulic cylinder 3. A limiting component 5, adapted to the passive bending component 4, is provided on one side of the passive bending component 4. A horizontal second hydraulic cylinder 7 is fixedly installed on the mounting platform 1, and an active bending component 8, adapted to the passive bending component 4, is fixedly installed on the piston rod of the second hydraulic cylinder 7. The second hydraulic cylinder 7 is fitted with a plug-in seat 6, which is fixedly connected to the mounting platform 1.

[0030] The passive bending assembly 4 includes a lifting seat 401 fixedly connected to the piston rod of the first hydraulic cylinder 3, and a mounting seat 402 mounted on the top of the lifting seat 401. Stacked shelves 403 are mounted on the top of the mounting seat 402. Passive wheels 404 are horizontally rotatably mounted between the shelves 403 and between the mounting seat 402 and the shelves 403, and the passive wheels 404 have different diameters. The passive wheels 404 of different diameters are used to achieve different radii of radius when bending the metal tube. The passive wheels 404 are simultaneously tangent to two mutually perpendicular vertical planes, and are positioned at a corner of the shelf 403 that adapts to the active bending assembly 8, thus ensuring that the active bending assembly 8 can complete the bending of the metal tube by moving only in a straight line. The minimum bending angle of this application is 90 degrees. The mounting seat 402 is threadedly connected to a number of fixing bolts 405, and the fixing bolts 405 simultaneously penetrate all shelves 403.

[0031] The lifting seat 401 is threadedly connected with several mounting bolts 406, which also pass through the mounting seat 402. The mounting seat 402 or the shelf 403 extends out through the fixed shaft passing through the axis of the driven wheel 404 and is inserted into the circular hole of the shelf 403 above it. When replacing the driven wheel 404 with a different diameter, the matching mounting seat 402 or shelf 403 must be replaced together.

[0032] The active bending assembly 8 includes a connecting seat 801 fixedly connected to the piston rod of the second hydraulic cylinder 7. A splicing block 803 is vertically inserted into the square column of the connecting seat 801, and the rotating shaft of the splicing block 803 is inserted into the end circular hole of the connecting seat 801. A drive wheel 802 is rotatably connected to the rotating shaft of the splicing block 803, and a connecting bolt 804, penetrating the splicing block 803, is threaded onto the square column of the connecting seat 801.

[0033] Both the driven wheel 404 and the driving wheel 802 are provided with annular grooves adapted to the diameter of the metal tube, allowing the driven wheel 404 and driving wheel 802 with different annular grooves to be replaced according to the diameter of the metal tube. When the diameter of the driven wheel 404 is unchanged when replaced at the same position, there is no need to replace the matching mounting base 402 or shelf 403.

[0034] The limiting component 5 includes a fixed base 501 fixedly connected to the top of the mounting platform 1. A limiting block 502 is vertically slidably inserted into the fixed base 501 on the side facing the passive bending component 4. Both ends of the fixed base 501 on the insertion side protrude to restrict the horizontal movement of the limiting block 502. A rod 503 is slidably inserted into the fixed base 501, with a portion of the rod 503 inserted into the limiting block 502. A circular plate for easy gripping is provided at the top of the rod 503. After the rod 503 is partially inserted into the limiting block 502, the limiting block 502 cannot move upwards. The limiting block 502 has a semi-circular groove adapted to the diameter of the metal tube, and both ends of the semi-circular groove have rounded corners to facilitate the insertion of the metal tube. During use, a limiting block 502 with a suitable semi-circular groove is selected and installed according to the diameter of the metal tube.

[0035] Working principle:

[0036] In use, a metal tube is inserted between the passive bending assembly 4 and the limiting assembly 5, with the metal tube fitting into the semi-circular groove of the limiting block 502. The starting point of the metal tube to be bent is inserted into the annular groove of the passive wheel 404. Then, the piston rod of the second hydraulic cylinder 7 extends, and the active bending assembly 8 squeezes the metal tube along the inserted passive wheel 404 to bend it to a suitable angle, completing one bend. At the same time, the metal tube is inserted into the annular groove of the active wheel 802, and the active wheel 802 rolls relative to the metal tube. After completing one bend, the active bending assembly 8 returns to its position, and the metal tube moves along the semi-circular groove and stops for the next bend. If it is necessary to change the radius of the bend, the piston rod of the first hydraulic cylinder 3 drives the passive bending assembly 4 to rise and fall, so that the passive wheel 404 of the required diameter and the active wheel 802 are on the same plane, so as to bend the metal tube.

[0037] When the diameter of the metal tube changes, the insertion rod 503 can be pulled out to move upward and remove the limiting block 502. The limiting block 502 that is adapted to the diameter of the new metal tube can be replaced. At the same time, the fixing bolts 405 of the passive bending assembly 4 can be removed, and the mounting base 402 and all the layers 403 can be separated from each other. In this way, several existing passive wheels 404 can be replaced with passive wheels 404 with the same diameter and the annular groove adapted to the new metal tube. Finally, the connecting bolts 804 can be unscrewed to separate the connecting base 801 and the splicing block 803, and the existing driving wheel 802 can be replaced with the driving wheel 802 with the annular groove adapted to the new metal tube.

[0038] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A metal tube bending device, comprising a mounting platform (1), characterized in that, A vertically downward mounting box (2) is fixedly connected to the end notch of the mounting platform (1). A vertical first hydraulic cylinder (3) is installed inside the mounting box (2). A passive bending assembly (4) that is adapted to both the inner cavity of the mounting box (2) and the notch of the mounting platform (1) is fixedly installed on the top of the piston rod of the first hydraulic cylinder (3). A limiting assembly (5) adapted to the passive bending assembly (4) is provided on one side of the passive bending assembly (4). A horizontal second hydraulic cylinder (7) is fixedly installed on the mounting platform (1), and an active bending assembly (8) adapted to the passive bending assembly (4) is fixedly installed on the piston rod of the second hydraulic cylinder (7). The passive bending assembly (4) includes a lifting assembly fixedly connected to the piston rod of the first hydraulic cylinder (3). The lifting seat (401) is equipped with a mounting seat (402) on its top. The mounting seat (402) is equipped with stacked shelves (403) on its top. Passive wheels (404) are horizontally rotatably mounted between the shelves (403) and between the mounting seat (402) and the shelves (403). Several passive wheels (404) have different diameters and are tangent to two mutually perpendicular vertical planes. Several passive wheels (404) are set at one corner of the shelf (403) to adapt to the active bending assembly (8). The mounting seat (402) is threaded with several fixing bolts (405), and the fixing bolts (405) penetrate all the shelves (403).

2. The metal tube bending device according to claim 1, characterized in that, The lifting seat (401) is threaded with several mounting bolts (406), and the mounting bolts (406) pass through the mounting seat (402).

3. The metal tube bending device according to claim 1, characterized in that, The mounting base (402) or shelf (403) extends through the fixed shaft passing through the axis of the driven wheel (404) and is inserted into the circular hole of the shelf (403) above it.

4. The metal tube bending device according to claim 1, characterized in that, The active bending assembly (8) includes a connecting seat (801) fixedly connected to the piston rod of the second hydraulic cylinder (7). A splicing block (803) is vertically inserted into the square column of the connecting seat (801), and the rotating shaft of the splicing block (803) is inserted into the end round hole of the connecting seat (801). The rotating shaft of the splicing block (803) is rotatably connected to an active wheel (802), and the square column of the connecting seat (801) is threadedly connected to a connecting bolt (804) that penetrates the splicing block (803).

5. A metal tube bending device according to claim 4, characterized in that, Both the passive wheel (404) and the active wheel (802) are provided with annular grooves adapted to the diameter of the metal tube.

6. A metal tube bending device according to claim 1, characterized in that, The limiting component (5) includes a fixed seat (501) fixedly connected to the top of the mounting platform (1). The fixed seat (501) is vertically slidably inserted into a limiting block (502) on the side facing the passive bending component (4). The fixed seat (501) is inclinedly slidably inserted with a rod (503), and the rod (503) is partially inserted into the limiting block (502).

7. A metal tube bending device according to claim 6, characterized in that, The limiting block (502) is provided with a semi-circular groove that is adapted to the diameter of the metal tube, and the two ends of the semi-circular groove are provided with rounded corners to facilitate the insertion of the metal tube.

8. A metal tube bending device according to claim 1, characterized in that, The second hydraulic cylinder (7) is fitted with a plug-in seat (6), and the plug-in seat (6) is fixedly connected to the mounting platform (1).

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