Pipe bending machine

Abstract

The utility model discloses a pipe bending machine which comprises a base, a machine shell and a cover shell. The machine shell is fixed over the base, a low-speed motor with a speed reducer is arranged in the machine shell, the top of the machine shell is covered with a cover shell, a rotating disc is arranged on the cover shell in a rotating fit mode, and the rotating disc is concentrically and fixedly connected with an output shaft of the low-speed motor. A pipe bending mechanism for bending a pipe is arranged above the cover shell, an angle adjusting mechanism capable of adjusting the bending angle of the pipe bending mechanism is arranged on the cover shell, and a controller, a starting switch for controlling a starting circuit of the low-speed motor and a power port for supplying power to the low-speed motor and the controller are installed on the machine shell; the pipe fitting bending device has the advantages that pipe fittings can be bent at a fixed angle in batches and can be stopped emergently, and safety performance is improved.

Description

Technical Field

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

[0002] The utility model patent with publication number CN208275988U discloses a pipe bending machine, including: a frame, a turntable, a roller, a limit plate and a power mechanism; the turntable is rotatably connected to the frame, and a first groove is provided on the outer circumference; the roller is located below the turntable, and the axis is parallel to the axis of the turntable; the roller is rotatably connected to the frame, and a second groove is provided on the outer circumference; the first groove and the second groove constitute a space for clamping the pipe fitting; the limit plate is connected to the turntable, and together with the first groove, constitutes a space for fixing the end of the pipe fitting; the power mechanism is connected to the turntable and is used to drive the turntable to rotate; it cannot bend the pipe fittings at a specified adjustable angle in batches during operation, and it has no stopping ability in the event of a sudden safety situation, and cannot prevent the expansion of the danger in time, and has a low safety factor. Utility Model Content

[0003] The purpose of the utility model is to provide a pipe bending machine to solve the problems mentioned in the above background technology.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A pipe bending machine comprises: a base, a casing, and a cover casing; the casing is fixed directly above the base, a low-speed motor with a reducer is built in the casing, a cover casing is provided on the top outer cover of the casing, a turntable is rotatably fitted on the cover casing, and the turntable and the output shaft of the low-speed motor are concentrically fixedly connected; a pipe bending mechanism for bending pipes is arranged above the cover casing, an angle adjustment mechanism for adjusting the bending angle of the pipe bending mechanism is arranged on the cover casing, a controller and a start switch for controlling the start circuit of the low-speed motor, and a power supply port for supplying power to the low-speed motor and the controller are installed on the casing.

[0006] Furthermore, in order to increase the smoothness of the rotation of the turntable, an annular bearing seat is fixed on the cover shell, and the bearing seat is embedded in the outer periphery of the turntable through the bearing, and forms a rotating pair with the turntable through the bearing.

[0007] Furthermore, in order to achieve the pipe bending capability, the pipe bending mechanism includes: a fixed axle bolt, a wheel frame, a rotating wheel, a fixed wheel, a positioning bolt, a bolt pin, and a J-shaped ring; the rotating wheel is fixed to the turntable by the fixed axle bolt, and the fixed axle bolt is provided with two sets of wheel frames with parallel plate structures that are clamped on the upper and lower sides of the rotating wheel, and a fixed wheel whose axis is parallel to the axis of the rotating wheel is fixed between the wheel frames through an axle rod, and the fixed wheel and its matching axle rod are matched through bearings, and the end of the wheel frame away from the fixed axle bolt is fixed to the cover shell by a positioning bolt, so that the fixed wheel can only rotate but not move; an arc-shaped notch is provided on the rotating wheel, and a bolt pin is embedded in the notch, and the bolt pin is fixed to the turntable to limit the relative movement of the rotating wheel and the turntable, and a J-shaped ring is fixed to the rotating wheel by bolts.

[0008] Furthermore, in order to increase the roundness of the bent pipe when bending the pipe, arc-shaped inner grooves are provided on the outer circumferential surfaces of the rotating wheel and the fixed wheel.

[0009] Furthermore, in order to realize the ability to adjust the bending angle of the bending tube mechanism, the angle adjustment mechanism includes: a slide groove, an arc-shaped slot hole, a scale line, a slider, a conductive sheet, a power pole, a limit sheet, a nut, a spring, and a pointer; a downwardly embedded slide groove is provided on the upper surface of the cover shell, an arc-shaped slot hole with an equal margin to the slide groove is provided at the bottom of the slide groove, a slider that can slide in the slide groove is embedded in the slide groove, a power pole is provided at the bottom of the slider, the power pole penetrates the arc-shaped slot hole to the bottom of the cover shell, a limit sheet is embedded on the power pole, a nut is provided on the power pole to fix the limit sheet on the power pole through threaded engagement, and the limit sheet is used to prevent the power pole from falling out of the arc-shaped slot hole; a conductive sheet is embedded in the top of the slider, a metal L-shaped rod is embedded in the turntable, the L-shaped rod is composed of two groups of long rods and short rods perpendicular to each other, the long rod side of the L-shaped rod is in the same plane as the axis of the turntable, and extends to just above the slide groove, and the short rod of the L-shaped rod protrudes from the bottom of the turntable.

[0010] Furthermore, in order to provide a continuous friction pre-tightening force between the slider and the slide slot, a spring is embedded between the nut and the limit plate on the power connection column, and the spring has an elastic tendency to stretch.

[0011] Furthermore, a sleeve having a protective function is embedded on one side of the long rod of the L-shaped rod close to the turntable.

[0012] Furthermore, in order to accurately determine the folding angle of the tube, the upper surface of the cover shell is provided with concave and colored scale lines, and the slider is provided with a pointer matching the scale lines.

[0013] Furthermore, in order to realize circuit control, the low-speed motor and the controller are electrically connected, the controller controls the steering and start and stop of the low-speed motor, the signal acquisition port of the controller and the L-shaped rod and the power terminal located below the cover shell are connected by wires, the power port and the low-speed motor and the controller are electrically connected with an emergency stop switch in series, and the control port of the controller is electrically connected to the start switch.

[0014] Furthermore, in order to avoid the risk of electric shock, the connection voltage of the power pole and the L-shaped rod shall not be greater than one volt.

[0015] In summary, the utility model has the following beneficial effects:

[0016] ① The bending angle is adjustable, with a wide range of applications, and can bend pipes at specified adjustable angles in batches: by setting up a pipe bending mechanism and an angle adjustment mechanism, pressing the start switch, the controller receives a start signal from the start switch, and the controller starts the low-speed motor to rotate clockwise. At this time, the turntable is driven to rotate by the output shaft of the low-speed motor. Because the rotating wheel and the turntable are relatively fixed by bolts, the rotating wheel will rotate with the turntable. When the rotating wheel rotates, the J-shaped ring on it will pull the pipe inside it to bend the pipe. When the pipe is bent to a preset angle, the L-shaped rod on the turntable will rotate at the same angle as the turntable and the rotating wheel. At this time, the L-shaped rod and the conductive sheet are in contact to form an electrical connection, and the signal acquisition port of the controller and the L-shaped rod are connected. The circuit between the L-shaped rod and the power pole is turned on, and the controller stops moving after receiving the conduction signal. At this time, the bent pipe is pulled out from the pipe end (the inner groove between the rotating wheel and the fixed wheel is larger than the outer contour of the pipe. The pipe can move within a certain range between the rotating wheel and the fixed wheel. Therefore, when the pipe is pulled out, the pipe and the J-ring can be separated and the limit is released through slight deflection and rotation, which facilitates the withdrawal of the pipe). At this time, press the start switch again. Because the controller has received the signal that the circuit between the L-shaped rod and the power pole is turned on, it will not continue to move clockwise. Through the preset circuit program, the controller controls the low-speed motor to rotate counterclockwise and reset. Repeating the above operations can complete the batch pipe bending operation.

[0017] ② Emergency stop can be achieved to improve safety performance: By setting up an emergency stop switch, when an emergency occurs, the emergency stop switch can be directly pressed to cut off the power supply to the equipment to ensure emergency safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the setting of the emergency stop switch and the power port in the utility model;

[0020] Figure 3It is a structural schematic diagram of the pipe bending mechanism and the angle adjustment mechanism in the utility model;

[0021] Figure 4 yes Figure 3 A magnified view of the structure in the middle;

[0022] Figure 5 This is a schematic diagram of the internal structure of the angle adjustment mechanism in the utility model;

[0023] Figure 6 yes Figure 5 A magnified view of the structure at point B.

[0024] In the figure, 1. base; 2. casing; 3. cover shell; 4. bending mechanism; 5. angle adjustment mechanism; 6. turntable; 7. controller; 8. low-speed motor; 9. bearing seat; 10. power port; 11. start switch; 12. emergency stop switch; 13. pipe fitting; 41. fixed shaft bolt; 42. wheel frame; 43. rotating wheel; 44. fixed wheel; 45. positioning bolt; 46. bolt pin; 47. J-ring; 51. slide groove; 52. arc-shaped slot hole; 53. scale line; 54. slider; 55. conductive sheet; 56. connecting post; 57. limit sheet; 58. nut; 59. spring; 510. pointer; 61. sleeve; 62. L-shaped rod; 81. output shaft. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Example:

[0027] See also Figure 1-Figure 6 The utility model provides a technical solution: a pipe bending machine, comprising: a base 1, a casing 2, and a cover shell 3; the casing 2 is fixed directly above the base 1, a low-speed motor 8 with a reducer is built in the casing 2, the top outer cover of the casing 2 is provided with a cover shell 3, a turntable 6 is rotatably matched on the cover shell 3, the turntable 6 and the output shaft 81 of the low-speed motor 8 (that is, the output shaft of the reducer attached thereto) are concentrically fixedly connected; a pipe bending mechanism 4 for bending pipes is arranged above the cover shell 3, an angle adjustment mechanism 5 for adjusting the bending angle of the pipe bending mechanism 4 is arranged on the cover shell 3, a controller 7 and a start switch 11 for controlling the start circuit of the low-speed motor 8, and a power port 10 for supplying power to the low-speed motor 8 and the controller 7 are installed on the casing 2.

[0028] An annular bearing seat 9 is fixed on the cover shell 3. The bearing seat 9 is embedded in the outer periphery of the turntable 6 through a bearing, and forms a rotating pair with the turntable 6 through the bearing.

[0029] The pipe bending mechanism 4 includes: a fixed shaft bolt 41, a wheel frame 42, a rotating wheel 43, a fixed wheel 44, a positioning bolt 45, a bolt pin 46, and a J-shaped ring 47; the rotating wheel 43 is fixed to the turntable 6 by the fixed shaft bolt 41, and the fixed shaft bolt 41 is provided with two sets of wheel frames 42 with parallel plate structures that are clamped on the upper and lower sides of the rotating wheel 43, and a fixed wheel 44 whose axis is parallel to the axis of the rotating wheel 43 is fixed between the wheel frames 42 through an axis rod, and the fixed wheel 44 and its matching axis rod are matched through bearings, and the end of the wheel frame 42 away from the fixed shaft bolt 41 is fixed to the cover shell 3 by a positioning bolt 45, and the rotating wheel 43 is provided with an arc-shaped notch, and a bolt pin 46 is embedded in the notch, and the bolt pin 46 is fixed to the turntable 6 to limit the relative movement of the rotating wheel 43 and the turntable 6, and a J-shaped ring 47 is fixed to the rotating wheel 43 by bolts.

[0030] The outer circumferential surfaces of the rotating wheel 43 and the fixed wheel 44 are provided with arc-shaped inner grooves.

[0031] The angle adjustment mechanism 5 includes: a slide groove 51, an arc-shaped slot hole 52, a scale line 53, a slider 54, a conductive sheet 55, a power connection post 56, a limit sheet 57, a nut 58, a spring 59, and a pointer 510; the upper surface of the cover shell 3 is provided with a downwardly embedded slide groove 51, the bottom of the slide groove 51 is provided with an arc-shaped slot hole 52 with the same margin as the slide groove 51, the slide groove 51 is embedded with a slider 54 that can slide in the slide groove 51, the bottom of the slider 54 is provided with a power connection post 56, and the power connection post 56 penetrates the arc-shaped slot hole 52 to the cover Below the shell 3, a limit plate 57 is embedded on the power post 56, and a nut 58 is threadedly fitted on the power post 56 to fix the limit plate 57 on the power post 56; a conductive sheet 55 is embedded in the top of the slider 54, and a metal L-shaped rod 62 is embedded in the turntable 6. The L-shaped rod 62 is composed of two groups of long rods and short rods that are perpendicular to each other. The long rod side of the L-shaped rod 62 is in the same plane as the axis of the turntable 6, and extends to just above the slide slot 51, and the short rod of the L-shaped rod 62 protrudes from the bottom of the turntable 6.

[0032] A spring 59 is embedded between the nut 58 and the limiting plate 57 on the power connection post 56 , and the spring 59 has an elastic tendency to extend.

[0033] A sleeve 61 is embedded on the side of the long rod of the L-shaped rod 62 close to the rotating disk 6 .

[0034] The upper surface of the cover shell 3 is provided with a concave and colored scale line 53 , and the slider 54 is provided with a pointer 510 matching the scale line 53 .

[0035] The low-speed motor 8 is electrically connected to the controller 7, and the controller 7 controls the steering and start and stop of the low-speed motor 8. The signal acquisition port of the controller 7 and the L-shaped rod 62 and the power connection post 56 located below the cover shell 3 are connected by wires. The power port 10 and the low-speed motor 8 and the controller 7 are electrically connected in series with an emergency stop switch 12, and the control port of the controller 7 and the start switch 11 are electrically connected.

[0036] The connection voltage of the power pole 56 and the L-shaped rod 62 shall not be greater than one volt.

[0037] When in use, the power port 10 is powered by a wire, the pipe 13 to be bent is inserted between the rotating wheel 43 and the fixed wheel 44, and penetrates the inner ring of the J-shaped ring 47, and the sliding block 54 is moved in the slide groove 51 so that the pointer 510 on it points to the scale to be bent on the corresponding scale line 53 (such as Figure 1 The position indicated by the pointer 510 is the 90-degree position), the start switch 11 is pressed, and the controller 7 receives the start signal from the start switch 11, and the controller 7 starts the low-speed motor 8 to rotate clockwise. At this time, the turntable 6 is driven to rotate by the output shaft 81 of the low-speed motor 8. Because the rotating wheel 43 and the turntable 6 are relatively fixed by the bolt 46, the rotating wheel 43 will rotate with the turntable 6. When the rotating wheel 43 rotates, the J-shaped ring 47 (such as Figure 1 As shown in the figure, the pipe 13 inside it will be pulled to bend the pipe 13. When the pipe 13 is bent to a preset angle, the L-shaped rod 62 on the turntable 6 will rotate at the same angle as the turntable 6 and the rotating wheel 43. At this time, the L-shaped rod 62 and the conductive sheet 55 are in contact to form an electrical connection, and the circuit between the signal acquisition port of the controller 7 and the L-shaped rod 62 and the connecting column 56 is turned on. After receiving the turn signal, the controller 7 stops moving, and the bent pipe 13 is pulled out from the end of the pipe 13 (the inner groove between the rotating wheel 43 and the fixed wheel 44 is larger than the outer contour of the pipe 13, and the pipe 13 can move within a certain range between the rotating wheel 43 and the fixed wheel 44, so when the pipe 13 is pulled out, it can be slightly deflected and rotated to The pipe 13 and the J-ring 47 are separated and the limit is released to facilitate the removal of the pipe 13). At this time, press the start switch 11 again. Because the controller 7 has received the signal that the circuit between the L-shaped rod 62 and the power terminal 56 is turned on, it will not continue to move clockwise. Through the preset circuit program, the controller 7 controls the low-speed motor 8 to rotate counterclockwise and reset. Repeat the above operation to complete the batch bending operation of the pipe 13 (the controller 7 is obtained by programming with a development board commonly used in the prior art. Its control structure and control principle are not within the scope of protection of this application, so its specific structure and control circuit are omitted). When an emergency occurs, the emergency stop switch 12 can be directly pressed to cut off the power supply to the equipment to ensure emergency safety.

[0038] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A pipe bending machine, comprising: A base (1), a casing (2), and a cover shell (3); characterized in that: the casing (2) is fixed directly above the base (1); a low-speed motor (8) with a reducer is built in the casing (2); a cover shell (3) is provided on the top of the casing (2); a turntable (6) is rotatably matched on the cover shell (3); the turntable (6) and the output shaft (81) of the low-speed motor (8) are coaxially fixedly connected; a pipe bending mechanism (4) for bending a pipe is arranged above the cover shell (3); an angle adjustment mechanism (5) for adjusting the bending angle of the pipe bending mechanism (4) is arranged on the cover shell (3); a controller (7) and a start switch (11) for controlling the start circuit of the low-speed motor (8) and a power supply port (10) for supplying power to the low-speed motor (8) and the controller (7) are installed on the casing (2).

2. A pipe bending machine according to claim 1, characterized in that: An annular bearing seat (9) is fixed on the cover shell (3). The bearing seat (9) is embedded in the outer periphery of the turntable (6) through a bearing and forms a rotating pair with the turntable (6) through the bearing.

3. A pipe bending machine according to claim 1, characterized in that: The pipe bending mechanism (4) comprises: a fixed shaft bolt (41), a wheel frame (42), a rotating wheel (43), a fixed wheel (44), a positioning bolt (45), a bolt pin (46), and a J-shaped ring (47); the rotating wheel (43) is fixed to the rotating disk (6) by the fixed shaft bolt (41); two sets of wheel frames (42) of parallel plate structure are provided on the fixed shaft bolt (41) and clamped on the upper and lower sides of the rotating wheel (43); an axis center line and an axis center line of the rotating wheel (43) are fixed between the wheel frames (42) through a shaft rod A parallel fixed wheel (44) is provided, the fixed wheel (44) and the shaft rod matched therewith are matched through bearings, one end of the wheel frame (42) away from the fixed shaft bolt (41) is fixed to the cover shell (3) by a positioning bolt (45), an arc-shaped notch is provided on the rotating wheel (43), a bolt pin (46) is embedded in the notch, the bolt pin (46) is fixed on the rotating disk (6), and the relative movement between the rotating wheel (43) and the rotating disk (6) is limited, and a J-shaped ring (47) is fixed to the rotating wheel (43) by bolts.

4. A pipe bending machine according to claim 3, characterized in that: The outer circumferential surfaces of the rotating wheel (43) and the fixed wheel (44) are provided with arc-shaped inner grooves.

5. A pipe bending machine according to claim 1, characterized in that: The angle adjustment mechanism (5) comprises: a slide groove (51), an arc-shaped slot hole (52), a scale line (53), a slider (54), a conductive sheet (55), a power connection post (56), a limit sheet (57), a nut (58), a spring (59), and a pointer (510); a slide groove (51) embedded downwardly is provided on the upper surface of the cover shell (3); an arc-shaped slot hole (52) with an equal margin to the slide groove (51) is provided at the bottom of the slide groove (51); a slider (54) capable of sliding in the slide groove (51) is embedded in the slide groove (51); a power connection post (56) is provided at the bottom of the slider (54); the power connection post (56) penetrates the arc-shaped slot hole (52) to the bottom of the cover shell (3), a limiting plate (57) is embedded on the power connection post (56), and a nut (58) is threadedly matched on the power connection post (56) to fix the limiting plate (57) on the power connection post (56); a conductive sheet (55) is embedded on the top of the slider (54), and a metal L-shaped rod (62) is embedded in the turntable (6), and the L-shaped rod (62) is composed of two groups of long rods and short rods that are perpendicular to each other. The side of the long rod of the L-shaped rod (62) is coplanar with the axis of the turntable (6) and extends to the top of the slide groove (51), and the short rod of the L-shaped rod (62) protrudes from the bottom of the turntable (6).

6. A pipe bending machine according to claim 5, characterized in that: A spring (59) is embedded between the nut (58) and the limiting plate (57) on the power connection post (56), and the spring (59) has an elastic tendency to stretch.

7. A pipe bending machine according to claim 5, characterized in that: A sleeve (61) is embedded on the side of the long rod of the L-shaped rod (62) close to the rotating disk (6).

8. A pipe bending machine according to claim 1 or 5, characterized in that: The upper surface of the cover shell (3) is provided with a concave and colored scale line (53), and the slider (54) is provided with a pointer (510) matching the scale line (53).

9. A pipe bending machine according to claim 5, characterized in that: The low-speed motor (8) and the controller (7) are electrically connected. The controller (7) controls the direction and start and stop of the low-speed motor (8). The signal collection port of the controller (7) and the L-shaped rod (62) and the power connection column (56) located below the cover shell (3) are connected by wires. The power port (10) and the low-speed motor (8) and the controller (7) are electrically connected in series with an emergency stop switch (12). The control port of the controller (7) and the start switch (11) are electrically connected.

10. A pipe bending machine according to claim 5, characterized in that: The connection voltage of the power pole (56) and the L-shaped rod (62) shall not be greater than one volt.

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