Pipe bending machine

Abstract

The utility model discloses a pipe bender which comprises a base, a frame body and a top plate, the frame body is arranged at the top end of the base, the top plate is arranged at the top end of the frame body, the pipe bender further comprises two limiting wheels, a movable plate and a bending head, and a plurality of annular grooves with different sizes are formed in the outer sides of the two limiting wheels. According to the metal pipe bending device, the annular grooves of different sizes are formed in the two limiting wheels and used for containing metal pipes of different sizes, the driving assembly is used for driving the front and back positions of the movable plate and the bending head, and then downward pressing is conducted; according to the metal pipe bending device, the metal pipe is placed in the rear annular groove in the two limiting wheels, the arc-shaped groove is formed in the bottom end of the bending head, the metal pipe can be bent conveniently, the bending head and the movable plate are detached through the fixing assembly, different bending heads can be replaced conveniently, the bending heads are matched with the matched annular grooves, and the metal pipes of different sizes can be bent.

Description

Technical Field

[0001] The utility model relates to the technical field of guardrail processing, in particular to a pipe bending machine. Background Art

[0002] In the production of door and window guardrails, metal tube bending is an important process step. When designing metal tube bending guardrails, safety factors such as anti-climbing and anti-falling are usually taken into consideration. Through reasonable bending design, the stability and protective performance of the guardrail can be increased to ensure people's safety.

[0003] A general pipe bending machine is mainly composed of a fixed disk and a rotatable handle. A baffle is provided on one side of the fixed disk, and a rotatable roller is provided on the handle. When in use, the metal pipe is passed through the fixed disk and the roller, and then the handle is bent. The baffle will block one end of the metal pipe, and the metal pipe can be bent under the drive of the handle. This method is time-consuming and manpower-consuming, and the efficiency is low. Moreover, most of the pipe bending machines in the prior art are not convenient for bending metal pipes of different calibers, and other compatible equipment needs to be replaced, which reduces production efficiency. Utility Model Content

[0004] The utility model provides a pipe bending machine, including a base, a frame and a top plate, the frame being arranged at the top end of the base, the top plate being arranged at the top end of the frame, and also including two limiting wheels, a movable plate and a bending press, the outer sides of the two limiting wheels are provided with a plurality of annular grooves of different sizes, the interior of the frame is provided with a movable component for driving the two limiting wheels to move relative to or away from each other, the movable plate is arranged below the top plate, the bending press is arranged at the bottom end of the movable plate, the top plate is provided with a driving component for driving the movable plate to move forward and backward and press downward, the bending press is provided with a fixing component, and is detachably connected to the movable plate through the fixing component.

[0005] Preferably, the fixing assembly includes a rotating member, a first threaded rod and a fixing sleeve, a rotating groove is opened at the top of the bending head, the rotating member is rotatably arranged between the front and rear side walls of the rotating groove, the first threaded rod is connected to the outer side of the rotating member and extends to the top of the movable plate, the fixing sleeve is threadedly connected to the first threaded rod and contacts at the top of the movable plate.

[0006] Preferably, a limiting groove is provided on the movable plate, and the size of the limiting groove is matched with the size of the first threaded rod.

[0007] Preferably, the driving assembly includes a fixed frame, a first motor, a second threaded rod, a movable frame and a hydraulic cylinder, the fixed frame is arranged at the top end of the top plate, the first motor is arranged at the rear side of the fixed frame, one end of the second threaded rod is coaxially connected to the output shaft of the first motor, and the other end is rotatably connected to the front side wall of the fixed frame, the movable frame is threadedly connected to the second threaded rod and extends to the bottom of the top plate, the hydraulic cylinder is arranged at the bottom end of the movable frame, and the bottom end of the telescopic rod is connected to the movable plate.

[0008] Preferably, the moving assembly includes a second motor, a bidirectional threaded rod, two moving parts and two support plates, the second motor is arranged on the left side of the frame, one end of the bidirectional threaded rod is coaxially connected to the output shaft of the second motor, and the other end is rotatably connected to the right side wall of the frame, the two moving parts are threadedly connected to the bidirectional threaded rod and extend to the front side of the frame, the two support plates are respectively connected to the front sides of the two moving parts, and the two limiting wheels are respectively rotatably arranged on the front sides of the two support plates.

[0009] Preferably, two sliding windows are provided on the front side of the frame, and the sizes of the two sliding windows are adapted to the sizes of the two moving parts.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] Annular grooves of different sizes are provided on the two limiting wheels for placing metal tubes of different sizes. The driving assembly is used to drive the front and rear positions of the movable plate and the bending head and then press downward. When a metal tube with a smaller diameter needs to be bent, the metal tube is placed in the annular groove relatively far back on the two limiting wheels. An arc groove is provided at the bottom end of the bending head to facilitate bending of the metal tube. The bending head and the movable plate can be disassembled by using a fixing assembly to facilitate replacement of different bending heads, which cooperate with the matching annular grooves to bend metal tubes of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0013] In the attached picture:

[0014] Figure 1 This is a structural schematic diagram of a pipe bending machine proposed by the utility model;

[0015] Figure 2 This is a front view of a pipe bending machine proposed by the utility model;

[0016] Figure 3This is an enlarged view of point A in a pipe bending machine proposed by the utility model;

[0017] Figure 4 A schematic diagram of a moving component in a pipe bending machine proposed by the utility model;

[0018] 1. Base; 2. Frame; 3. Top plate; 4. Limiting wheel; 5. Moving assembly; 51. Second motor; 52. Bidirectional threaded rod; 53. Moving part; 54. Support plate; 6. Moving plate; 7. Press elbow; 8. Fixed assembly; 81. Rotating part; 82. First threaded rod; 83. Fixed sleeve; 9. Driving assembly; 91. Fixed frame; 92. First motor; 93. Second threaded rod; 94. Moving frame; 95. Hydraulic cylinder. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1-4 As shown, a pipe bending machine proposed by the utility model includes a base 1, a frame 2 and a top plate 3, the frame 2 is arranged at the top of the base 1, the top plate 3 is arranged at the top of the frame 2, and also includes two limiting wheels 4, a movable plate 6 and a bending press 7. The outer sides of the two limiting wheels 4 are provided with a plurality of annular grooves of different sizes, and the interior of the frame 2 is provided with a movable component 5 for driving the two limiting wheels 4 to move relative to or oppositely, the movable plate 6 is arranged below the top plate 3, the bending press 7 is arranged at the bottom end of the movable plate 6, and a driving component 9 for driving the movable plate 6 to move forward and backward and press downward is arranged on the top plate 3, and a fixing component 8 is arranged on the bending press 7, and the fixing component 8 is detachably connected to the movable plate 6 through the fixing component 8.

[0022] In the utility model, the top plate 3 is fixedly connected to the top end of the frame body 2, the driving component 9 is arranged on the top plate 3, and the two limiting wheels 4 are rotatably arranged on the front side of the frame body 2. The diameters of the annular grooves on the two limiting wheels 4 are increased successively and are used to place metal pipes of different sizes. The front and rear positions of the movable plate 6 and the bending head 7 are driven by using the driving component 9 and then pressed down. When it is necessary to bend a metal pipe with a smaller diameter, the metal pipe is placed in the relatively rear annular groove on the two limiting wheels 4. An arc groove is provided at the bottom end of the bending head 7, which is convenient for bending the metal pipe. The bending head 7 and the movable plate 6 can be disassembled by using the fixing component 8, which is convenient for replacing different bending heads 7, and matching with the matching annular grooves to bend metal pipes of different sizes. The spacing between the two limiting wheels 4 can be changed by using the movable component 5. The minimum bending radius of the metal pipe can be changed when pressing down. A shorter span allows a smaller bending radius, while a longer span requires a larger bending radius.

[0023] In an optional embodiment, the fixing assembly 8 includes a rotating member 81, a first threaded rod 82 and a fixing sleeve 83. A rotating groove is provided at the top of the bending head 7. The rotating member 81 is rotatably arranged between the front and rear side walls of the rotating groove. The first threaded rod 82 is connected to the outer side of the rotating member 81 and extends to the top of the movable plate 6. The fixing sleeve 83 is threadedly connected to the first threaded rod 82 and contacts at the top of the movable plate 6.

[0024] In an optional embodiment, a limiting groove is provided on the movable plate 6 , and the size of the limiting groove is matched with the size of the first threaded rod 82 .

[0025] It should be noted that the fixing sleeve 83 is twisted to separate the fixing sleeve 83 from the movable plate 6, and the first threaded rod 82 is flipped by the rotating member 81 to move the first threaded rod 82 out of the limiting groove. At this time, the movable plate 6 and the bending head 7 can be separated.

[0026] In an optional embodiment, the driving assembly 9 includes a fixed frame 91, a first motor 92, a second threaded rod 93, a movable frame 94 and a hydraulic cylinder 95. The fixed frame 91 is arranged at the top of the top plate 3, the first motor 92 is arranged at the rear side of the fixed frame 91, one end of the second threaded rod 93 is coaxially connected to the output shaft of the first motor 92, and the other end is rotatably connected to the front side wall of the fixed frame 91, the movable frame 94 is threadedly connected to the second threaded rod 93 and extends to the bottom of the top plate 3, the hydraulic cylinder 95 is arranged at the bottom end of the movable frame 94, and the bottom end of the telescopic rod is connected to the movable plate 6.

[0027] It should be noted that by starting the first motor 92 to drive the second threaded rod 93 to rotate, the movable frame 94 is driven to move, and a sliding window matching the size of the movable frame 94 is provided on the top plate 3, which drives the hydraulic cylinder 95 to move forward and backward, thereby adjusting the front and rear positions of the movable plate 6 and the bending head 7.

[0028] In an optional embodiment, the moving component 5 includes a second motor 51, a bidirectional threaded rod 52, two moving parts 53 and two support plates 54. The second motor 51 is arranged on the left side of the frame body 2. One end of the bidirectional threaded rod 52 is coaxially connected to the output shaft of the second motor 51, and the other end is rotatably connected to the right side wall of the frame body 2. The two moving parts 53 are both threadedly connected to the bidirectional threaded rod 52 and extend to the front side of the frame body 2. The two support plates 54 are respectively connected to the front sides of the two moving parts 53, and the two limiting wheels 4 are respectively rotatably arranged on the front sides of the two support plates 54.

[0029] It should be noted that, by starting the second motor 51 to drive the bidirectional threaded rod 52 to rotate, the two moving members 53 are driven to move relative to or away from each other, thereby changing the distance between the two limiting wheels 4 .

[0030] In an optional embodiment, two sliding windows are provided on the front side of the frame body 2 , and the sizes of the two sliding windows are adapted to the sizes of the two moving members 53 .

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pipe bending machine, comprising a base (1), a frame (2) and a top plate (3), wherein the frame (2) is arranged at the top of the base (1), and the top plate (3) is arranged at the top of the frame (2), characterized in that: The frame (2) further comprises two limiting wheels (4), a movable plate (6) and a bending head (7), wherein the outer sides of the two limiting wheels (4) are provided with a plurality of annular grooves of different sizes, and a movable component (5) for driving the two limiting wheels (4) to move relative to or away from each other is arranged inside the frame (2), the movable plate (6) is arranged below the top plate (3), the bending head (7) is arranged at the bottom end of the movable plate (6), and a driving component (9) for driving the movable plate (6) to move forward and backward and to press downward is arranged on the top plate (3), and a fixing component (8) is arranged on the bending head (7), and the bending head is detachably connected to the movable plate (6) through the fixing component (8).

2. A pipe bending machine according to claim 1, characterized in that: The fixing assembly (8) comprises a rotating member (81), a first threaded rod (82) and a fixing sleeve (83); a rotating groove is provided at the top end of the bending head (7); the rotating member (81) is rotatably arranged between front and rear side walls of the rotating groove; the first threaded rod (82) is connected to the outer side of the rotating member (81) and extends to the top end of the movable plate (6); the fixing sleeve (83) is threadably connected to the first threaded rod (82) and contacts the top end of the movable plate (6).

3. A pipe bending machine according to claim 2, characterized in that: The movable plate (6) is provided with a limiting groove, the size of which matches the size of the first threaded rod (82).

4. A pipe bending machine according to claim 3, characterized in that: The driving assembly (9) comprises a fixed frame (91), a first motor (92), a second threaded rod (93), a movable frame (94) and a hydraulic cylinder (95); the fixed frame (91) is arranged at the top of the top plate (3); the first motor (92) is arranged at the rear side of the fixed frame (91); one end of the second threaded rod (93) is coaxially connected to the output shaft of the first motor (92), and the other end is rotatably connected to the front side wall of the fixed frame (91); the movable frame (94) is threadedly connected to the second threaded rod (93) and extends to the bottom of the top plate (3); the hydraulic cylinder (95) is arranged at the bottom end of the movable frame (94), and the bottom end of the telescopic rod is connected to the movable plate (6).

5. A pipe bending machine according to claim 1, characterized in that: The moving assembly (5) comprises a second motor (51), a bidirectional threaded rod (52), two moving members (53) and two support plates (54); the second motor (51) is arranged on the left side of the frame (2); one end of the bidirectional threaded rod (52) is coaxially connected to the output shaft of the second motor (51), and the other end is rotatably connected to the right side wall of the frame (2); the two moving members (53) are both threadedly connected to the bidirectional threaded rod (52) and extend to the front side of the frame (2); the two support plates (54) are respectively connected to the front sides of the two moving members (53); and the two limiting wheels (4) are respectively rotatably arranged on the front sides of the two support plates (54).

6. A pipe bending machine according to claim 5, characterized in that: Two sliding windows are provided on the front side of the frame (2), and the sizes of the two sliding windows are adapted to the sizes of the two moving parts (53).

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